Home / 57,711.89-86,572.76-20,268.70

Finding the Fourth Proportional to 57,711.89, 86,572.76 and 20,268.70

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Solution

The fourth proportional to 57,711.89, 86,572.76 and 20,268.70 is: 30,404.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,711.89 : 86,572.76 = 20,268.70 : x
  2. Step 2: Convert to fraction form
    57,711.89/86,572.76 = 20,268.70/x
  3. Step 3: Cross multiply
    57,711.89x = 86,572.76 × 20,268.70
  4. Step 4: Simplify right side
    57,711.89x = 1,754,717,134.85
  5. Step 5: Solve for x
    x = 1,754,717,134.85/57,711.89
  6. Step 6: Final answer
    x = 30,404.78

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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.