Answer
n=3
Work Step by Step
$\frac{12}{\frac{3}{4}}=\frac{48}{n}$ $\longrightarrow$ cross multiply to solve for n
$12n=\frac{3}{4}\times48$$\longrightarrow$multiply
$12n=36$$\longrightarrow$multiplication property of equality
$12n\div12=36\div12$$\longrightarrow$ divide
$n=3$
