Home / 87,886.50-131,829.53-21,326.57

Finding the Fourth Proportional to 87,886.50, 131,829.53 and 21,326.57

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Solution

The fourth proportional to 87,886.50, 131,829.53 and 21,326.57 is: 31,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,886.50 : 131,829.53 = 21,326.57 : x
  2. Step 2: Convert to fraction form
    87,886.50/131,829.53 = 21,326.57/x
  3. Step 3: Cross multiply
    87,886.50x = 131,829.53 × 21,326.57
  4. Step 4: Simplify right side
    87,886.50x = 2,811,471,699.61
  5. Step 5: Solve for x
    x = 2,811,471,699.61/87,886.50
  6. Step 6: Final answer
    x = 31,989.80

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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.