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Finding the Fourth Proportional to 87,374.25, 120,576.51 and 49,648.50

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Solution

The fourth proportional to 87,374.25, 120,576.51 and 49,648.50 is: 68,514.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,374.25 : 120,576.51 = 49,648.50 : x
  2. Step 2: Convert to fraction form
    87,374.25/120,576.51 = 49,648.50/x
  3. Step 3: Cross multiply
    87,374.25x = 120,576.51 × 49,648.50
  4. Step 4: Simplify right side
    87,374.25x = 5,986,442,856.74
  5. Step 5: Solve for x
    x = 5,986,442,856.74/87,374.25
  6. Step 6: Final answer
    x = 68,514.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.