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Finding the Fourth Proportional to 138,591.80, 207,862.59 and 38,727.25

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Solution

The fourth proportional to 138,591.80, 207,862.59 and 38,727.25 is: 58,083.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,591.80 : 207,862.59 = 38,727.25 : x
  2. Step 2: Convert to fraction form
    138,591.80/207,862.59 = 38,727.25/x
  3. Step 3: Cross multiply
    138,591.80x = 207,862.59 × 38,727.25
  4. Step 4: Simplify right side
    138,591.80x = 8,049,946,488.58
  5. Step 5: Solve for x
    x = 8,049,946,488.58/138,591.80
  6. Step 6: Final answer
    x = 58,083.86

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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.