You can pretty much look at it this way.

Any time villain puts money into the pot, he's risking some money to claim the pot. Based on the amount he's risking relative to the pot, his bet has to work a certain % of the time. This % is directly correlated to the % of time you need to continue/defend etc.

So villain pets Pot (P). His bet has to work P/(P+P) = 1/2 = 50%.
So hero must continue 1-50% of the time or 50%

Villain bets (2/3)P. His bet has to work (2/3)P/((2/3)P+P) = (2/3)P/(5/3)P = 2/5 = 40%
So hero must continue 1-40% of the time, or 60%.

The above are in the scenario where villain bets into the pot.

Now your example. 100 effective. Let's say pot is 30. Villain bets 20. Hero raises to 40. Villain goes all-in for 85 total.
In this case, after you raise the pot size is: 30+20+40 = 90. Villain goes all-in for 85 total (but he already bet 20, so he's putting in another 65). So villain is risking 65 for a pot of 90.
Villains bet needs to work = 65/(65+90) = 38.7%
Hero needs to continue 62.3% of the time.

So in this example, you need to continue with 62.3% of your turn raising range, to prevent villain from being able to profitably shove all-in any two cards.

With regards to your - another street to come. All that matters is that on this street, villain is risking P for P, so if we don't continue 50% of the time then he can bet any two cards profitably on the turn. If you have a read that villain bets pot weakly, and thus call more than 50%, that's fine. But at that point you're not playing GTO and you're exploiting villains tendency to bet pot with a weak range.