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Finding the Fourth Proportional to 68,213.73, 102,324.39 and 20,836.02

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Solution

The fourth proportional to 68,213.73, 102,324.39 and 20,836.02 is: 31,255.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,213.73 : 102,324.39 = 20,836.02 : x
  2. Step 2: Convert to fraction form
    68,213.73/102,324.39 = 20,836.02/x
  3. Step 3: Cross multiply
    68,213.73x = 102,324.39 × 20,836.02
  4. Step 4: Simplify right side
    68,213.73x = 2,132,033,036.53
  5. Step 5: Solve for x
    x = 2,132,033,036.53/68,213.73
  6. Step 6: Final answer
    x = 31,255.19

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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.