Home / 87,580,819.70-131,371,229.55-85,341,331.70

Finding the Fourth Proportional to 87,580,819.70, 131,371,229.55 and 85,341,331.70

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Solution

The fourth proportional to 87,580,819.70, 131,371,229.55 and 85,341,331.70 is: 128,011,997.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,580,819.70 : 131,371,229.55 = 85,341,331.70 : x
  2. Step 2: Convert to fraction form
    87,580,819.70/131,371,229.55 = 85,341,331.70/x
  3. Step 3: Cross multiply
    87,580,819.70x = 131,371,229.55 × 85,341,331.70
  4. Step 4: Simplify right side
    87,580,819.70x = 11,211,395,676,863,392
  5. Step 5: Solve for x
    x = 11,211,395,676,863,392/87,580,819.70
  6. Step 6: Final answer
    x = 128,011,997.55

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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.