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Finding the Fourth Proportional to 69,781.74, 104,687.70 and 22,385.79

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Solution

The fourth proportional to 69,781.74, 104,687.70 and 22,385.79 is: 33,583.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,781.74 : 104,687.70 = 22,385.79 : x
  2. Step 2: Convert to fraction form
    69,781.74/104,687.70 = 22,385.79/x
  3. Step 3: Cross multiply
    69,781.74x = 104,687.70 × 22,385.79
  4. Step 4: Simplify right side
    69,781.74x = 2,343,516,867.78
  5. Step 5: Solve for x
    x = 2,343,516,867.78/69,781.74
  6. Step 6: Final answer
    x = 33,583.53

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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.