Home / 87,853.41-131,779.76-21,293.46

Finding the Fourth Proportional to 87,853.41, 131,779.76 and 21,293.46

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Solution

The fourth proportional to 87,853.41, 131,779.76 and 21,293.46 is: 31,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,853.41 : 131,779.76 = 21,293.46 : x
  2. Step 2: Convert to fraction form
    87,853.41/131,779.76 = 21,293.46/x
  3. Step 3: Cross multiply
    87,853.41x = 131,779.76 × 21,293.46
  4. Step 4: Simplify right side
    87,853.41x = 2,806,046,941.90
  5. Step 5: Solve for x
    x = 2,806,046,941.90/87,853.41
  6. Step 6: Final answer
    x = 31,940.10

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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.