Home / 71,437.28-107,148.39-29,321.80

Finding the Fourth Proportional to 71,437.28, 107,148.39 and 29,321.80

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Solution

The fourth proportional to 71,437.28, 107,148.39 and 29,321.80 is: 43,979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,437.28 : 107,148.39 = 29,321.80 : x
  2. Step 2: Convert to fraction form
    71,437.28/107,148.39 = 29,321.80/x
  3. Step 3: Cross multiply
    71,437.28x = 107,148.39 × 29,321.80
  4. Step 4: Simplify right side
    71,437.28x = 3,141,783,661.90
  5. Step 5: Solve for x
    x = 3,141,783,661.90/71,437.28
  6. Step 6: Final answer
    x = 43,979.61

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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.