Finding the Fourth Proportional to 71,618.20, 107,457.66 and 38,329.62
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Solution
The fourth proportional to 71,618.20, 107,457.66 and 38,329.62 is: 57,510.68
Step by Step Solution
- Step 1: Write the proportion equation
71,618.20 : 107,457.66 = 38,329.62 : x - Step 2: Convert to fraction form
71,618.20/107,457.66 = 38,329.62/x - Step 3: Cross multiply
71,618.20x = 107,457.66 × 38,329.62 - Step 4: Simplify right side
71,618.20x = 4,118,811,273.89 - Step 5: Solve for x
x = 4,118,811,273.89/71,618.20 - Step 6: Final answer
x = 57,510.68
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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.