Home / 87,885.32-131,826.88-21,326

Finding the Fourth Proportional to 87,885.32, 131,826.88 and 21,326

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Solution

The fourth proportional to 87,885.32, 131,826.88 and 21,326 is: 31,988.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,885.32 : 131,826.88 = 21,326 : x
  2. Step 2: Convert to fraction form
    87,885.32/131,826.88 = 21,326/x
  3. Step 3: Cross multiply
    87,885.32x = 131,826.88 × 21,326
  4. Step 4: Simplify right side
    87,885.32x = 2,811,340,042.88
  5. Step 5: Solve for x
    x = 2,811,340,042.88/87,885.32
  6. Step 6: Final answer
    x = 31,988.73

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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.