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Finding the Fourth Proportional to 79,930.87, 119,882.65 and 26,616.79

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Solution

The fourth proportional to 79,930.87, 119,882.65 and 26,616.79 is: 39,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,930.87 : 119,882.65 = 26,616.79 : x
  2. Step 2: Convert to fraction form
    79,930.87/119,882.65 = 26,616.79/x
  3. Step 3: Cross multiply
    79,930.87x = 119,882.65 × 26,616.79
  4. Step 4: Simplify right side
    79,930.87x = 3,190,891,319.69
  5. Step 5: Solve for x
    x = 3,190,891,319.69/79,930.87
  6. Step 6: Final answer
    x = 39,920.64

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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.