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Finding the Fourth Proportional to 68,253.48, 102,380.22 and 21,510

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Solution

The fourth proportional to 68,253.48, 102,380.22 and 21,510 is: 32,265

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,253.48 : 102,380.22 = 21,510 : x
  2. Step 2: Convert to fraction form
    68,253.48/102,380.22 = 21,510/x
  3. Step 3: Cross multiply
    68,253.48x = 102,380.22 × 21,510
  4. Step 4: Simplify right side
    68,253.48x = 2,202,198,532.20
  5. Step 5: Solve for x
    x = 2,202,198,532.20/68,253.48
  6. Step 6: Final answer
    x = 32,265

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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.