Home / 87,637.60-131,456.40-28,475.20

Finding the Fourth Proportional to 87,637.60, 131,456.40 and 28,475.20

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Solution

The fourth proportional to 87,637.60, 131,456.40 and 28,475.20 is: 42,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,637.60 : 131,456.40 = 28,475.20 : x
  2. Step 2: Convert to fraction form
    87,637.60/131,456.40 = 28,475.20/x
  3. Step 3: Cross multiply
    87,637.60x = 131,456.40 × 28,475.20
  4. Step 4: Simplify right side
    87,637.60x = 3,743,247,281.28
  5. Step 5: Solve for x
    x = 3,743,247,281.28/87,637.60
  6. Step 6: Final answer
    x = 42,712.80

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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.