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Finding the Fourth Proportional to 52,160.28, 71,981.10 and 28,286.90

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Solution

The fourth proportional to 52,160.28, 71,981.10 and 28,286.90 is: 39,035.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,160.28 : 71,981.10 = 28,286.90 : x
  2. Step 2: Convert to fraction form
    52,160.28/71,981.10 = 28,286.90/x
  3. Step 3: Cross multiply
    52,160.28x = 71,981.10 × 28,286.90
  4. Step 4: Simplify right side
    52,160.28x = 2,036,122,177.59
  5. Step 5: Solve for x
    x = 2,036,122,177.59/52,160.28
  6. Step 6: Final answer
    x = 39,035.88

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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.