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Finding the Fourth Proportional to 79,178.53, 118,747.04 and 29,272.90

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Solution

The fourth proportional to 79,178.53, 118,747.04 and 29,272.90 is: 43,901.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,178.53 : 118,747.04 = 29,272.90 : x
  2. Step 2: Convert to fraction form
    79,178.53/118,747.04 = 29,272.90/x
  3. Step 3: Cross multiply
    79,178.53x = 118,747.04 × 29,272.90
  4. Step 4: Simplify right side
    79,178.53x = 3,476,070,227.22
  5. Step 5: Solve for x
    x = 3,476,070,227.22/79,178.53
  6. Step 6: Final answer
    x = 43,901.68

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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.