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Finding the Fourth Proportional to 78,860.52, 118,227.96 and 45,542.88

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Solution

The fourth proportional to 78,860.52, 118,227.96 and 45,542.88 is: 68,278.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,860.52 : 118,227.96 = 45,542.88 : x
  2. Step 2: Convert to fraction form
    78,860.52/118,227.96 = 45,542.88/x
  3. Step 3: Cross multiply
    78,860.52x = 118,227.96 × 45,542.88
  4. Step 4: Simplify right side
    78,860.52x = 5,384,441,794.92
  5. Step 5: Solve for x
    x = 5,384,441,794.92/78,860.52
  6. Step 6: Final answer
    x = 68,278.04

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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.