Home / 87,178.41-130,755.20-28,006.43

Finding the Fourth Proportional to 87,178.41, 130,755.20 and 28,006.43

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Solution

The fourth proportional to 87,178.41, 130,755.20 and 28,006.43 is: 42,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,178.41 : 130,755.20 = 28,006.43 : x
  2. Step 2: Convert to fraction form
    87,178.41/130,755.20 = 28,006.43/x
  3. Step 3: Cross multiply
    87,178.41x = 130,755.20 × 28,006.43
  4. Step 4: Simplify right side
    87,178.41x = 3,661,985,562.13
  5. Step 5: Solve for x
    x = 3,661,985,562.13/87,178.41
  6. Step 6: Final answer
    x = 42,005.65

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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.