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Finding the Fourth Proportional to 79,363.97, 119,044.64 and 31,977.90

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Solution

The fourth proportional to 79,363.97, 119,044.64 and 31,977.90 is: 47,966.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,363.97 : 119,044.64 = 31,977.90 : x
  2. Step 2: Convert to fraction form
    79,363.97/119,044.64 = 31,977.90/x
  3. Step 3: Cross multiply
    79,363.97x = 119,044.64 × 31,977.90
  4. Step 4: Simplify right side
    79,363.97x = 3,806,797,593.46
  5. Step 5: Solve for x
    x = 3,806,797,593.46/79,363.97
  6. Step 6: Final answer
    x = 47,966.32

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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.