Home / 87,705.30-131,471.55-43,338.90

Finding the Fourth Proportional to 87,705.30, 131,471.55 and 43,338.90

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Solution

The fourth proportional to 87,705.30, 131,471.55 and 43,338.90 is: 64,965.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,705.30 : 131,471.55 = 43,338.90 : x
  2. Step 2: Convert to fraction form
    87,705.30/131,471.55 = 43,338.90/x
  3. Step 3: Cross multiply
    87,705.30x = 131,471.55 × 43,338.90
  4. Step 4: Simplify right side
    87,705.30x = 5,697,832,358.30
  5. Step 5: Solve for x
    x = 5,697,832,358.30/87,705.30
  6. Step 6: Final answer
    x = 64,965.66

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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.