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Finding the Fourth Proportional to 79,251.20, 118,882.20 and 25,211.60

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Solution

The fourth proportional to 79,251.20, 118,882.20 and 25,211.60 is: 37,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,251.20 : 118,882.20 = 25,211.60 : x
  2. Step 2: Convert to fraction form
    79,251.20/118,882.20 = 25,211.60/x
  3. Step 3: Cross multiply
    79,251.20x = 118,882.20 × 25,211.60
  4. Step 4: Simplify right side
    79,251.20x = 2,997,210,473.52
  5. Step 5: Solve for x
    x = 2,997,210,473.52/79,251.20
  6. Step 6: Final answer
    x = 37,819.12

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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.