Home / 67,115.22-100,647.92-19,717.26

Finding the Fourth Proportional to 67,115.22, 100,647.92 and 19,717.26

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Solution

The fourth proportional to 67,115.22, 100,647.92 and 19,717.26 is: 29,568.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,115.22 : 100,647.92 = 19,717.26 : x
  2. Step 2: Convert to fraction form
    67,115.22/100,647.92 = 19,717.26/x
  3. Step 3: Cross multiply
    67,115.22x = 100,647.92 × 19,717.26
  4. Step 4: Simplify right side
    67,115.22x = 1,984,501,207.10
  5. Step 5: Solve for x
    x = 1,984,501,207.10/67,115.22
  6. Step 6: Final answer
    x = 29,568.57

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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.