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Finding the Fourth Proportional to 87,403.20, 131,104.80 and 32,020.80

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Solution

The fourth proportional to 87,403.20, 131,104.80 and 32,020.80 is: 48,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,403.20 : 131,104.80 = 32,020.80 : x
  2. Step 2: Convert to fraction form
    87,403.20/131,104.80 = 32,020.80/x
  3. Step 3: Cross multiply
    87,403.20x = 131,104.80 × 32,020.80
  4. Step 4: Simplify right side
    87,403.20x = 4,198,080,579.84
  5. Step 5: Solve for x
    x = 4,198,080,579.84/87,403.20
  6. Step 6: Final answer
    x = 48,031.20

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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.