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Finding the Fourth Proportional to 69,328.78, 103,993.17 and 22,581.65

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Solution

The fourth proportional to 69,328.78, 103,993.17 and 22,581.65 is: 33,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,328.78 : 103,993.17 = 22,581.65 : x
  2. Step 2: Convert to fraction form
    69,328.78/103,993.17 = 22,581.65/x
  3. Step 3: Cross multiply
    69,328.78x = 103,993.17 × 22,581.65
  4. Step 4: Simplify right side
    69,328.78x = 2,348,337,367.33
  5. Step 5: Solve for x
    x = 2,348,337,367.33/69,328.78
  6. Step 6: Final answer
    x = 33,872.48

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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.