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Finding the Fourth Proportional to 68,018.91, 102,028.22 and 18,099

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Solution

The fourth proportional to 68,018.91, 102,028.22 and 18,099 is: 27,148.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,018.91 : 102,028.22 = 18,099 : x
  2. Step 2: Convert to fraction form
    68,018.91/102,028.22 = 18,099/x
  3. Step 3: Cross multiply
    68,018.91x = 102,028.22 × 18,099
  4. Step 4: Simplify right side
    68,018.91x = 1,846,608,753.78
  5. Step 5: Solve for x
    x = 1,846,608,753.78/68,018.91
  6. Step 6: Final answer
    x = 27,148.46

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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.