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Finding the Fourth Proportional to 65,179.60, 89,965.68 and 60,747.28

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Solution

The fourth proportional to 65,179.60, 89,965.68 and 60,747.28 is: 83,847.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,179.60 : 89,965.68 = 60,747.28 : x
  2. Step 2: Convert to fraction form
    65,179.60/89,965.68 = 60,747.28/x
  3. Step 3: Cross multiply
    65,179.60x = 89,965.68 × 60,747.28
  4. Step 4: Simplify right side
    65,179.60x = 5,465,170,353.35
  5. Step 5: Solve for x
    x = 5,465,170,353.35/65,179.60
  6. Step 6: Final answer
    x = 83,847.87

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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.