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Finding the Fourth Proportional to 68,753.43, 103,064.54 and 21,974.31

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Solution

The fourth proportional to 68,753.43, 103,064.54 and 21,974.31 is: 32,940.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,753.43 : 103,064.54 = 21,974.31 : x
  2. Step 2: Convert to fraction form
    68,753.43/103,064.54 = 21,974.31/x
  3. Step 3: Cross multiply
    68,753.43x = 103,064.54 × 21,974.31
  4. Step 4: Simplify right side
    68,753.43x = 2,264,772,042.10
  5. Step 5: Solve for x
    x = 2,264,772,042.10/68,753.43
  6. Step 6: Final answer
    x = 32,940.50

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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.