Home / 87,511.10-131,331.45-57,919.10

Finding the Fourth Proportional to 87,511.10, 131,331.45 and 57,919.10

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Solution

The fourth proportional to 87,511.10, 131,331.45 and 57,919.10 is: 86,921.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,511.10 : 131,331.45 = 57,919.10 : x
  2. Step 2: Convert to fraction form
    87,511.10/131,331.45 = 57,919.10/x
  3. Step 3: Cross multiply
    87,511.10x = 131,331.45 × 57,919.10
  4. Step 4: Simplify right side
    87,511.10x = 7,606,599,385.70
  5. Step 5: Solve for x
    x = 7,606,599,385.70/87,511.10
  6. Step 6: Final answer
    x = 86,921.54

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1.5x scale

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.