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Finding the Fourth Proportional to 69,079, 103,618.50 and 22,331.88

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Solution

The fourth proportional to 69,079, 103,618.50 and 22,331.88 is: 33,497.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,079 : 103,618.50 = 22,331.88 : x
  2. Step 2: Convert to fraction form
    69,079/103,618.50 = 22,331.88/x
  3. Step 3: Cross multiply
    69,079x = 103,618.50 × 22,331.88
  4. Step 4: Simplify right side
    69,079x = 2,313,995,907.78
  5. Step 5: Solve for x
    x = 2,313,995,907.78/69,079
  6. Step 6: Final answer
    x = 33,497.82

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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.