Home / 71,435.28-107,145.39-29,319.80

Finding the Fourth Proportional to 71,435.28, 107,145.39 and 29,319.80

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Solution

The fourth proportional to 71,435.28, 107,145.39 and 29,319.80 is: 43,976.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,435.28 : 107,145.39 = 29,319.80 : x
  2. Step 2: Convert to fraction form
    71,435.28/107,145.39 = 29,319.80/x
  3. Step 3: Cross multiply
    71,435.28x = 107,145.39 × 29,319.80
  4. Step 4: Simplify right side
    71,435.28x = 3,141,481,405.72
  5. Step 5: Solve for x
    x = 3,141,481,405.72/71,435.28
  6. Step 6: Final answer
    x = 43,976.61

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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.