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Finding the Fourth Proportional to 68,718.80, 103,107.54 and 29,294.48

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Solution

The fourth proportional to 68,718.80, 103,107.54 and 29,294.48 is: 43,954.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,718.80 : 103,107.54 = 29,294.48 : x
  2. Step 2: Convert to fraction form
    68,718.80/103,107.54 = 29,294.48/x
  3. Step 3: Cross multiply
    68,718.80x = 103,107.54 × 29,294.48
  4. Step 4: Simplify right side
    68,718.80x = 3,020,481,768.38
  5. Step 5: Solve for x
    x = 3,020,481,768.38/68,718.80
  6. Step 6: Final answer
    x = 43,954.23

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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.