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Finding the Fourth Proportional to 79,139.52, 118,725.12 and 29,219.92

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Solution

The fourth proportional to 79,139.52, 118,725.12 and 29,219.92 is: 43,835.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.52 : 118,725.12 = 29,219.92 : x
  2. Step 2: Convert to fraction form
    79,139.52/118,725.12 = 29,219.92/x
  3. Step 3: Cross multiply
    79,139.52x = 118,725.12 × 29,219.92
  4. Step 4: Simplify right side
    79,139.52x = 3,469,138,508.39
  5. Step 5: Solve for x
    x = 3,469,138,508.39/79,139.52
  6. Step 6: Final answer
    x = 43,835.73

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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.