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Finding the Fourth Proportional to 60,221.88, 90,165.96 and 45,385.92

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Solution

The fourth proportional to 60,221.88, 90,165.96 and 45,385.92 is: 67,953.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,221.88 : 90,165.96 = 45,385.92 : x
  2. Step 2: Convert to fraction form
    60,221.88/90,165.96 = 45,385.92/x
  3. Step 3: Cross multiply
    60,221.88x = 90,165.96 × 45,385.92
  4. Step 4: Simplify right side
    60,221.88x = 4,092,265,047.28
  5. Step 5: Solve for x
    x = 4,092,265,047.28/60,221.88
  6. Step 6: Final answer
    x = 67,953.13

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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.