Home / 87,891.32-131,835.88-21,332

Finding the Fourth Proportional to 87,891.32, 131,835.88 and 21,332

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Solution

The fourth proportional to 87,891.32, 131,835.88 and 21,332 is: 31,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,891.32 : 131,835.88 = 21,332 : x
  2. Step 2: Convert to fraction form
    87,891.32/131,835.88 = 21,332/x
  3. Step 3: Cross multiply
    87,891.32x = 131,835.88 × 21,332
  4. Step 4: Simplify right side
    87,891.32x = 2,812,322,992.16
  5. Step 5: Solve for x
    x = 2,812,322,992.16/87,891.32
  6. Step 6: Final answer
    x = 31,997.73

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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.