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Finding the Fourth Proportional to 68,099.84, 102,166.12 and 21,352.72

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Solution

The fourth proportional to 68,099.84, 102,166.12 and 21,352.72 is: 32,034.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,099.84 : 102,166.12 = 21,352.72 : x
  2. Step 2: Convert to fraction form
    68,099.84/102,166.12 = 21,352.72/x
  3. Step 3: Cross multiply
    68,099.84x = 102,166.12 × 21,352.72
  4. Step 4: Simplify right side
    68,099.84x = 2,181,524,553.85
  5. Step 5: Solve for x
    x = 2,181,524,553.85/68,099.84
  6. Step 6: Final answer
    x = 32,034.21

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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.