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Finding the Fourth Proportional to 79,135.52, 118,719.12 and 29,215.92

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Solution

The fourth proportional to 79,135.52, 118,719.12 and 29,215.92 is: 43,829.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,135.52 : 118,719.12 = 29,215.92 : x
  2. Step 2: Convert to fraction form
    79,135.52/118,719.12 = 29,215.92/x
  3. Step 3: Cross multiply
    79,135.52x = 118,719.12 × 29,215.92
  4. Step 4: Simplify right side
    79,135.52x = 3,468,488,312.39
  5. Step 5: Solve for x
    x = 3,468,488,312.39/79,135.52
  6. Step 6: Final answer
    x = 43,829.73

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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.