Home / 87,821.70-131,732.01-28,657.41

Finding the Fourth Proportional to 87,821.70, 131,732.01 and 28,657.41

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Solution

The fourth proportional to 87,821.70, 131,732.01 and 28,657.41 is: 42,985.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,821.70 : 131,732.01 = 28,657.41 : x
  2. Step 2: Convert to fraction form
    87,821.70/131,732.01 = 28,657.41/x
  3. Step 3: Cross multiply
    87,821.70x = 131,732.01 × 28,657.41
  4. Step 4: Simplify right side
    87,821.70x = 3,775,098,220.69
  5. Step 5: Solve for x
    x = 3,775,098,220.69/87,821.70
  6. Step 6: Final answer
    x = 42,985.94

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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.