Write an equivalent fraction of $\frac{3}{4}$ with numerator as $36.$

Let the denominator of equivalent fraction of $\frac{3}{4}$ be $\text{"x"}$.

Now, the question can be written as - $\frac{3}{4}=\frac{36}{\text{x}}$

By cross-multiplication method,

$$\begin{gathered} 3x=36\times 4 \\ x=\frac{36\times 4}{3} \\ x=12\times 4 \\ x=48 \end{gathered}$$

Hence, the equivalent fraction of $\frac{3}{4}$is $\frac{36}{48}.$