Home / 72,486.18-108,760.56-39,229.70

Finding the Fourth Proportional to 72,486.18, 108,760.56 and 39,229.70

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Solution

The fourth proportional to 72,486.18, 108,760.56 and 39,229.70 is: 58,861.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,486.18 : 108,760.56 = 39,229.70 : x
  2. Step 2: Convert to fraction form
    72,486.18/108,760.56 = 39,229.70/x
  3. Step 3: Cross multiply
    72,486.18x = 108,760.56 × 39,229.70
  4. Step 4: Simplify right side
    72,486.18x = 4,266,644,140.63
  5. Step 5: Solve for x
    x = 4,266,644,140.63/72,486.18
  6. Step 6: Final answer
    x = 58,861.48

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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.