Home / 87,543.24-131,327.01-28,359.78

Finding the Fourth Proportional to 87,543.24, 131,327.01 and 28,359.78

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Solution

The fourth proportional to 87,543.24, 131,327.01 and 28,359.78 is: 42,543.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,543.24 : 131,327.01 = 28,359.78 : x
  2. Step 2: Convert to fraction form
    87,543.24/131,327.01 = 28,359.78/x
  3. Step 3: Cross multiply
    87,543.24x = 131,327.01 × 28,359.78
  4. Step 4: Simplify right side
    87,543.24x = 3,724,405,111.66
  5. Step 5: Solve for x
    x = 3,724,405,111.66/87,543.24
  6. Step 6: Final answer
    x = 42,543.61

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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.