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Finding the Fourth Proportional to 63,909.60, 95,864.40 and 45,247.20

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Solution

The fourth proportional to 63,909.60, 95,864.40 and 45,247.20 is: 67,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,909.60 : 95,864.40 = 45,247.20 : x
  2. Step 2: Convert to fraction form
    63,909.60/95,864.40 = 45,247.20/x
  3. Step 3: Cross multiply
    63,909.60x = 95,864.40 × 45,247.20
  4. Step 4: Simplify right side
    63,909.60x = 4,337,595,679.68
  5. Step 5: Solve for x
    x = 4,337,595,679.68/63,909.60
  6. Step 6: Final answer
    x = 67,870.80

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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.