Home / 71,787.24-107,672.38-19,200.80

Finding the Fourth Proportional to 71,787.24, 107,672.38 and 19,200.80

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Solution

The fourth proportional to 71,787.24, 107,672.38 and 19,200.80 is: 28,798.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,787.24 : 107,672.38 = 19,200.80 : x
  2. Step 2: Convert to fraction form
    71,787.24/107,672.38 = 19,200.80/x
  3. Step 3: Cross multiply
    71,787.24x = 107,672.38 × 19,200.80
  4. Step 4: Simplify right side
    71,787.24x = 2,067,395,833.90
  5. Step 5: Solve for x
    x = 2,067,395,833.90/71,787.24
  6. Step 6: Final answer
    x = 28,798.93

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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.