Finding the Fourth Proportional to 113,701.85, 156,909.21 and 62,716.40
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Solution
The fourth proportional to 113,701.85, 156,909.21 and 62,716.40 is: 86,548.99
Step by Step Solution
- Step 1: Write the proportion equation
113,701.85 : 156,909.21 = 62,716.40 : x - Step 2: Convert to fraction form
113,701.85/156,909.21 = 62,716.40/x - Step 3: Cross multiply
113,701.85x = 156,909.21 × 62,716.40 - Step 4: Simplify right side
113,701.85x = 9,840,780,778.04 - Step 5: Solve for x
x = 9,840,780,778.04/113,701.85 - Step 6: Final answer
x = 86,548.99
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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.