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Finding the Fourth Proportional to 71,480.46, 98,654.88 and 39,659.61

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Solution

The fourth proportional to 71,480.46, 98,654.88 and 39,659.61 is: 54,736.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,480.46 : 98,654.88 = 39,659.61 : x
  2. Step 2: Convert to fraction form
    71,480.46/98,654.88 = 39,659.61/x
  3. Step 3: Cross multiply
    71,480.46x = 98,654.88 × 39,659.61
  4. Step 4: Simplify right side
    71,480.46x = 3,912,614,065.40
  5. Step 5: Solve for x
    x = 3,912,614,065.40/71,480.46
  6. Step 6: Final answer
    x = 54,736.83

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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.