Home / 87,967.12-131,962.20-28,786.96

Finding the Fourth Proportional to 87,967.12, 131,962.20 and 28,786.96

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Solution

The fourth proportional to 87,967.12, 131,962.20 and 28,786.96 is: 43,184.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,967.12 : 131,962.20 = 28,786.96 : x
  2. Step 2: Convert to fraction form
    87,967.12/131,962.20 = 28,786.96/x
  3. Step 3: Cross multiply
    87,967.12x = 131,962.20 × 28,786.96
  4. Step 4: Simplify right side
    87,967.12x = 3,798,790,572.91
  5. Step 5: Solve for x
    x = 3,798,790,572.91/87,967.12
  6. Step 6: Final answer
    x = 43,184.21

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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.