Home / 71,761.24-107,633.40-19,174.78

Finding the Fourth Proportional to 71,761.24, 107,633.40 and 19,174.78

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Solution

The fourth proportional to 71,761.24, 107,633.40 and 19,174.78 is: 28,759.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,761.24 : 107,633.40 = 19,174.78 : x
  2. Step 2: Convert to fraction form
    71,761.24/107,633.40 = 19,174.78/x
  3. Step 3: Cross multiply
    71,761.24x = 107,633.40 × 19,174.78
  4. Step 4: Simplify right side
    71,761.24x = 2,063,846,765.65
  5. Step 5: Solve for x
    x = 2,063,846,765.65/71,761.24
  6. Step 6: Final answer
    x = 28,759.91

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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.