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Finding the Fourth Proportional to 79,909.60, 119,864.40 and 33,149.92

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Solution

The fourth proportional to 79,909.60, 119,864.40 and 33,149.92 is: 49,724.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,909.60 : 119,864.40 = 33,149.92 : x
  2. Step 2: Convert to fraction form
    79,909.60/119,864.40 = 33,149.92/x
  3. Step 3: Cross multiply
    79,909.60x = 119,864.40 × 33,149.92
  4. Step 4: Simplify right side
    79,909.60x = 3,973,495,270.85
  5. Step 5: Solve for x
    x = 3,973,495,270.85/79,909.60
  6. Step 6: Final answer
    x = 49,724.88

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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.