Home / 87,854.09-131,779.98-21,294.79

Finding the Fourth Proportional to 87,854.09, 131,779.98 and 21,294.79

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Solution

The fourth proportional to 87,854.09, 131,779.98 and 21,294.79 is: 31,941.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.09 : 131,779.98 = 21,294.79 : x
  2. Step 2: Convert to fraction form
    87,854.09/131,779.98 = 21,294.79/x
  3. Step 3: Cross multiply
    87,854.09x = 131,779.98 × 21,294.79
  4. Step 4: Simplify right side
    87,854.09x = 2,806,226,670.85
  5. Step 5: Solve for x
    x = 2,806,226,670.85/87,854.09
  6. Step 6: Final answer
    x = 31,941.90

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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.