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Finding the Fourth Proportional to 71,337.78, 98,449.10 and 39,506.70

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Solution

The fourth proportional to 71,337.78, 98,449.10 and 39,506.70 is: 54,520.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,337.78 : 98,449.10 = 39,506.70 : x
  2. Step 2: Convert to fraction form
    71,337.78/98,449.10 = 39,506.70/x
  3. Step 3: Cross multiply
    71,337.78x = 98,449.10 × 39,506.70
  4. Step 4: Simplify right side
    71,337.78x = 3,889,398,861.44
  5. Step 5: Solve for x
    x = 3,889,398,861.44/71,337.78
  6. Step 6: Final answer
    x = 54,520.88

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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.