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Finding the Fourth Proportional to 82,608.39, 123,844.14 and 68,529.51

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Solution

The fourth proportional to 82,608.39, 123,844.14 and 68,529.51 is: 102,737.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,608.39 : 123,844.14 = 68,529.51 : x
  2. Step 2: Convert to fraction form
    82,608.39/123,844.14 = 68,529.51/x
  3. Step 3: Cross multiply
    82,608.39x = 123,844.14 × 68,529.51
  4. Step 4: Simplify right side
    82,608.39x = 8,486,978,230.57
  5. Step 5: Solve for x
    x = 8,486,978,230.57/82,608.39
  6. Step 6: Final answer
    x = 102,737.49

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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.