Home / 87,487.74-131,389.68-80,454.78

Finding the Fourth Proportional to 87,487.74, 131,389.68 and 80,454.78

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Solution

The fourth proportional to 87,487.74, 131,389.68 and 80,454.78 is: 120,827.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,487.74 : 131,389.68 = 80,454.78 : x
  2. Step 2: Convert to fraction form
    87,487.74/131,389.68 = 80,454.78/x
  3. Step 3: Cross multiply
    87,487.74x = 131,389.68 × 80,454.78
  4. Step 4: Simplify right side
    87,487.74x = 10,570,927,798.67
  5. Step 5: Solve for x
    x = 10,570,927,798.67/87,487.74
  6. Step 6: Final answer
    x = 120,827.53

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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.