Finding the Fourth Proportional to 71,910.92, 107,781.66 and 32,421.80
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Solution
The fourth proportional to 71,910.92, 107,781.66 and 32,421.80 is: 48,594.50
Step by Step Solution
- Step 1: Write the proportion equation
71,910.92 : 107,781.66 = 32,421.80 : x - Step 2: Convert to fraction form
71,910.92/107,781.66 = 32,421.80/x - Step 3: Cross multiply
71,910.92x = 107,781.66 × 32,421.80 - Step 4: Simplify right side
71,910.92x = 3,494,475,424.19 - Step 5: Solve for x
x = 3,494,475,424.19/71,910.92 - Step 6: Final answer
x = 48,594.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.