36 is 72% of what number?
To set this up, you would do...
36=.72x, having x be your unknown number. Then, divide each side by .72 to get the variable by itself.
36/.72=x
Simplify: 50=x
Your answer is 50. Hope that helped!!! :)
We set up a proportion: 36/?= 72/100
Cross multiply: 72?= 36100
⇒ ?= 36*100/72= 50
36 is 72% of 50.