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Finding the Fourth Proportional to 82,744.60, 124,042.56 and 80,234.86

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Solution

The fourth proportional to 82,744.60, 124,042.56 and 80,234.86 is: 120,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,744.60 : 124,042.56 = 80,234.86 : x
  2. Step 2: Convert to fraction form
    82,744.60/124,042.56 = 80,234.86/x
  3. Step 3: Cross multiply
    82,744.60x = 124,042.56 × 80,234.86
  4. Step 4: Simplify right side
    82,744.60x = 9,952,537,435.64
  5. Step 5: Solve for x
    x = 9,952,537,435.64/82,744.60
  6. Step 6: Final answer
    x = 120,280.20

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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.