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Finding the Fourth Proportional to 79,178.52, 118,756.26 and 29,919

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Solution

The fourth proportional to 79,178.52, 118,756.26 and 29,919 is: 44,874.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,178.52 : 118,756.26 = 29,919 : x
  2. Step 2: Convert to fraction form
    79,178.52/118,756.26 = 29,919/x
  3. Step 3: Cross multiply
    79,178.52x = 118,756.26 × 29,919
  4. Step 4: Simplify right side
    79,178.52x = 3,553,068,542.94
  5. Step 5: Solve for x
    x = 3,553,068,542.94/79,178.52
  6. Step 6: Final answer
    x = 44,874.15

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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.