Home / 87,659.28-120,971.88-49,932.72

Finding the Fourth Proportional to 87,659.28, 120,971.88 and 49,932.72

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Solution

The fourth proportional to 87,659.28, 120,971.88 and 49,932.72 is: 68,908.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,659.28 : 120,971.88 = 49,932.72 : x
  2. Step 2: Convert to fraction form
    87,659.28/120,971.88 = 49,932.72/x
  3. Step 3: Cross multiply
    87,659.28x = 120,971.88 × 49,932.72
  4. Step 4: Simplify right side
    87,659.28x = 6,040,455,011.91
  5. Step 5: Solve for x
    x = 6,040,455,011.91/87,659.28
  6. Step 6: Final answer
    x = 68,908.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.