Home / 67,287.11-100,735.08-39,121.28

Finding the Fourth Proportional to 67,287.11, 100,735.08 and 39,121.28

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Solution

The fourth proportional to 67,287.11, 100,735.08 and 39,121.28 is: 58,568.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,287.11 : 100,735.08 = 39,121.28 : x
  2. Step 2: Convert to fraction form
    67,287.11/100,735.08 = 39,121.28/x
  3. Step 3: Cross multiply
    67,287.11x = 100,735.08 × 39,121.28
  4. Step 4: Simplify right side
    67,287.11x = 3,940,884,997.88
  5. Step 5: Solve for x
    x = 3,940,884,997.88/67,287.11
  6. Step 6: Final answer
    x = 58,568.21

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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.