Home / 87,661.31-131,523.21-28,497.15

Finding the Fourth Proportional to 87,661.31, 131,523.21 and 28,497.15

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Solution

The fourth proportional to 87,661.31, 131,523.21 and 28,497.15 is: 42,755.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,661.31 : 131,523.21 = 28,497.15 : x
  2. Step 2: Convert to fraction form
    87,661.31/131,523.21 = 28,497.15/x
  3. Step 3: Cross multiply
    87,661.31x = 131,523.21 × 28,497.15
  4. Step 4: Simplify right side
    87,661.31x = 3,748,036,643.85
  5. Step 5: Solve for x
    x = 3,748,036,643.85/87,661.31
  6. Step 6: Final answer
    x = 42,755.88

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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.