Finding the Fourth Proportional to 71,011.43, 106,415.66 and 52,143.42
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Solution
The fourth proportional to 71,011.43, 106,415.66 and 52,143.42 is: 78,140.61
Step by Step Solution
- Step 1: Write the proportion equation
71,011.43 : 106,415.66 = 52,143.42 : x - Step 2: Convert to fraction form
71,011.43/106,415.66 = 52,143.42/x - Step 3: Cross multiply
71,011.43x = 106,415.66 × 52,143.42 - Step 4: Simplify right side
71,011.43x = 5,548,876,193.24 - Step 5: Solve for x
x = 5,548,876,193.24/71,011.43 - Step 6: Final answer
x = 78,140.61
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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.