Home / 87,921.86-131,789.84-28,741.64

Finding the Fourth Proportional to 87,921.86, 131,789.84 and 28,741.64

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Solution

The fourth proportional to 87,921.86, 131,789.84 and 28,741.64 is: 43,082.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.86 : 131,789.84 = 28,741.64 : x
  2. Step 2: Convert to fraction form
    87,921.86/131,789.84 = 28,741.64/x
  3. Step 3: Cross multiply
    87,921.86x = 131,789.84 × 28,741.64
  4. Step 4: Simplify right side
    87,921.86x = 3,787,855,334.28
  5. Step 5: Solve for x
    x = 3,787,855,334.28/87,921.86
  6. Step 6: Final answer
    x = 43,082.07

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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.