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Finding the Fourth Proportional to 68,001.31, 102,001.83 and 18,081.42

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Solution

The fourth proportional to 68,001.31, 102,001.83 and 18,081.42 is: 27,122.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,001.31 : 102,001.83 = 18,081.42 : x
  2. Step 2: Convert to fraction form
    68,001.31/102,001.83 = 18,081.42/x
  3. Step 3: Cross multiply
    68,001.31x = 102,001.83 × 18,081.42
  4. Step 4: Simplify right side
    68,001.31x = 1,844,337,929.00
  5. Step 5: Solve for x
    x = 1,844,337,929.00/68,001.31
  6. Step 6: Final answer
    x = 27,122.09

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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.