Home / 87,680.80-131,456.40-48,282.40

Finding the Fourth Proportional to 87,680.80, 131,456.40 and 48,282.40

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Solution

The fourth proportional to 87,680.80, 131,456.40 and 48,282.40 is: 72,387.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,680.80 : 131,456.40 = 48,282.40 : x
  2. Step 2: Convert to fraction form
    87,680.80/131,456.40 = 48,282.40/x
  3. Step 3: Cross multiply
    87,680.80x = 131,456.40 × 48,282.40
  4. Step 4: Simplify right side
    87,680.80x = 6,347,030,487.36
  5. Step 5: Solve for x
    x = 6,347,030,487.36/87,680.80
  6. Step 6: Final answer
    x = 72,387.92

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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.