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Finding the Fourth Proportional to 80,810.52, 121,234.84 and 25,406.52

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Solution

The fourth proportional to 80,810.52, 121,234.84 and 25,406.52 is: 38,115.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,810.52 : 121,234.84 = 25,406.52 : x
  2. Step 2: Convert to fraction form
    80,810.52/121,234.84 = 25,406.52/x
  3. Step 3: Cross multiply
    80,810.52x = 121,234.84 × 25,406.52
  4. Step 4: Simplify right side
    80,810.52x = 3,080,155,387.16
  5. Step 5: Solve for x
    x = 3,080,155,387.16/80,810.52
  6. Step 6: Final answer
    x = 38,115.77

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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.