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Finding the Fourth Proportional to 71,279.20, 106,836.12 and 26,877.52

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Solution

The fourth proportional to 71,279.20, 106,836.12 and 26,877.52 is: 40,285.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,279.20 : 106,836.12 = 26,877.52 : x
  2. Step 2: Convert to fraction form
    71,279.20/106,836.12 = 26,877.52/x
  3. Step 3: Cross multiply
    71,279.20x = 106,836.12 × 26,877.52
  4. Step 4: Simplify right side
    71,279.20x = 2,871,489,952.02
  5. Step 5: Solve for x
    x = 2,871,489,952.02/71,279.20
  6. Step 6: Final answer
    x = 40,285.10

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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.