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Finding the Fourth Proportional to 65,593.80, 98,342.10 and 28,123.20

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Solution

The fourth proportional to 65,593.80, 98,342.10 and 28,123.20 is: 42,163.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,593.80 : 98,342.10 = 28,123.20 : x
  2. Step 2: Convert to fraction form
    65,593.80/98,342.10 = 28,123.20/x
  3. Step 3: Cross multiply
    65,593.80x = 98,342.10 × 28,123.20
  4. Step 4: Simplify right side
    65,593.80x = 2,765,694,546.72
  5. Step 5: Solve for x
    x = 2,765,694,546.72/65,593.80
  6. Step 6: Final answer
    x = 42,163.96

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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.