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Finding the Fourth Proportional to 68,676.78, 94,769.44 and 38,455.18

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Solution

The fourth proportional to 68,676.78, 94,769.44 and 38,455.18 is: 53,065.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,676.78 : 94,769.44 = 38,455.18 : x
  2. Step 2: Convert to fraction form
    68,676.78/94,769.44 = 38,455.18/x
  3. Step 3: Cross multiply
    68,676.78x = 94,769.44 × 38,455.18
  4. Step 4: Simplify right side
    68,676.78x = 3,644,375,540.64
  5. Step 5: Solve for x
    x = 3,644,375,540.64/68,676.78
  6. Step 6: Final answer
    x = 53,065.61

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1.5x scale

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.