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Finding the Fourth Proportional to 68,755.74, 94,864.62 and 39,676.74

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Solution

The fourth proportional to 68,755.74, 94,864.62 and 39,676.74 is: 54,743.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,755.74 : 94,864.62 = 39,676.74 : x
  2. Step 2: Convert to fraction form
    68,755.74/94,864.62 = 39,676.74/x
  3. Step 3: Cross multiply
    68,755.74x = 94,864.62 × 39,676.74
  4. Step 4: Simplify right side
    68,755.74x = 3,763,918,432.80
  5. Step 5: Solve for x
    x = 3,763,918,432.80/68,755.74
  6. Step 6: Final answer
    x = 54,743.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.