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Finding the Fourth Proportional to 71,978.70, 108,000.45 and 25,265.10

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Solution

The fourth proportional to 71,978.70, 108,000.45 and 25,265.10 is: 37,909.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,978.70 : 108,000.45 = 25,265.10 : x
  2. Step 2: Convert to fraction form
    71,978.70/108,000.45 = 25,265.10/x
  3. Step 3: Cross multiply
    71,978.70x = 108,000.45 × 25,265.10
  4. Step 4: Simplify right side
    71,978.70x = 2,728,642,169.30
  5. Step 5: Solve for x
    x = 2,728,642,169.30/71,978.70
  6. Step 6: Final answer
    x = 37,909.02

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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.