Home / 38,474.20-57,711.30-31,907.80

Finding the Fourth Proportional to 38,474.20, 57,711.30 and 31,907.80

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Solution

The fourth proportional to 38,474.20, 57,711.30 and 31,907.80 is: 47,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,474.20 : 57,711.30 = 31,907.80 : x
  2. Step 2: Convert to fraction form
    38,474.20/57,711.30 = 31,907.80/x
  3. Step 3: Cross multiply
    38,474.20x = 57,711.30 × 31,907.80
  4. Step 4: Simplify right side
    38,474.20x = 1,841,440,618.14
  5. Step 5: Solve for x
    x = 1,841,440,618.14/38,474.20
  6. Step 6: Final answer
    x = 47,861.70

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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.