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Finding the Fourth Proportional to 69,154.75, 103,722.81 and 27,005.39

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Solution

The fourth proportional to 69,154.75, 103,722.81 and 27,005.39 is: 40,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,154.75 : 103,722.81 = 27,005.39 : x
  2. Step 2: Convert to fraction form
    69,154.75/103,722.81 = 27,005.39/x
  3. Step 3: Cross multiply
    69,154.75x = 103,722.81 × 27,005.39
  4. Step 4: Simplify right side
    69,154.75x = 2,801,074,935.95
  5. Step 5: Solve for x
    x = 2,801,074,935.95/69,154.75
  6. Step 6: Final answer
    x = 40,504.45

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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.