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Finding the Fourth Proportional to 68,029.90, 102,045.90 and 25,912.33

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Solution

The fourth proportional to 68,029.90, 102,045.90 and 25,912.33 is: 38,868.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,029.90 : 102,045.90 = 25,912.33 : x
  2. Step 2: Convert to fraction form
    68,029.90/102,045.90 = 25,912.33/x
  3. Step 3: Cross multiply
    68,029.90x = 102,045.90 × 25,912.33
  4. Step 4: Simplify right side
    68,029.90x = 2,644,247,035.95
  5. Step 5: Solve for x
    x = 2,644,247,035.95/68,029.90
  6. Step 6: Final answer
    x = 38,868.89

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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.