Home / 87,434.60-131,411.10-76,029.80

Finding the Fourth Proportional to 87,434.60, 131,411.10 and 76,029.80

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Solution

The fourth proportional to 87,434.60, 131,411.10 and 76,029.80 is: 114,270.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,434.60 : 131,411.10 = 76,029.80 : x
  2. Step 2: Convert to fraction form
    87,434.60/131,411.10 = 76,029.80/x
  3. Step 3: Cross multiply
    87,434.60x = 131,411.10 × 76,029.80
  4. Step 4: Simplify right side
    87,434.60x = 9,991,159,650.78
  5. Step 5: Solve for x
    x = 9,991,159,650.78/87,434.60
  6. Step 6: Final answer
    x = 114,270.09

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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.