Finding the Fourth Proportional to 84.96, 117.26 and 47.62
Calculator
Solution
The fourth proportional to 84.96, 117.26 and 47.62 is: 65.72
Step by Step Solution
- Step 1: Write the proportion equation
84.96 : 117.26 = 47.62 : x - Step 2: Convert to fraction form
84.96/117.26 = 47.62/x - Step 3: Cross multiply
84.96x = 117.26 × 47.62 - Step 4: Simplify right side
84.96x = 5,583.92 - Step 5: Solve for x
x = 5,583.92/84.96 - Step 6: Final answer
x = 65.72
Related Problems
Find fourth proportional to 42.48, 58.63 and 23.81
Half scale
Find fourth proportional to 169.92, 234.52 and 95.24
Double scale
Find fourth proportional to 85.96, 118.64 and 48.62
Similar ratio
Find fourth proportional to 127.44, 175.89 and 71.43
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.