Home / 87,778.41-131,666.22-21,218.04

Finding the Fourth Proportional to 87,778.41, 131,666.22 and 21,218.04

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Solution

The fourth proportional to 87,778.41, 131,666.22 and 21,218.04 is: 31,826.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,778.41 : 131,666.22 = 21,218.04 : x
  2. Step 2: Convert to fraction form
    87,778.41/131,666.22 = 21,218.04/x
  3. Step 3: Cross multiply
    87,778.41x = 131,666.22 × 21,218.04
  4. Step 4: Simplify right side
    87,778.41x = 2,793,699,122.61
  5. Step 5: Solve for x
    x = 2,793,699,122.61/87,778.41
  6. Step 6: Final answer
    x = 31,826.72

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1.5x scale

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.