\[\boxed{\text{5.314.}}\]
\[\frac{1}{4} = \frac{1 \cdot 4}{4 \cdot 4} = \frac{4}{16}\ \]
\[\frac{2}{6} = \frac{2 \cdot 4}{6 \cdot 4} = \frac{8}{24}\ \]
\[\frac{42}{9} = \frac{42 \cdot 4}{9 \cdot 4} = \frac{168}{36}\]
\[\frac{41}{50} = \frac{41 \cdot 4}{50 \cdot 4} = \frac{164}{200}\ \]