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Finding the Fourth Proportional to 79,931.30, 119,592.45 and 71,073.95

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Solution

The fourth proportional to 79,931.30, 119,592.45 and 71,073.95 is: 106,340.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,931.30 : 119,592.45 = 71,073.95 : x
  2. Step 2: Convert to fraction form
    79,931.30/119,592.45 = 71,073.95/x
  3. Step 3: Cross multiply
    79,931.30x = 119,592.45 × 71,073.95
  4. Step 4: Simplify right side
    79,931.30x = 8,499,907,213.72
  5. Step 5: Solve for x
    x = 8,499,907,213.72/79,931.30
  6. Step 6: Final answer
    x = 106,340.17

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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.