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Finding the Fourth Proportional to 73,676.78, 101,673.96 and 40,142.78

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Solution

The fourth proportional to 73,676.78, 101,673.96 and 40,142.78 is: 55,397.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,676.78 : 101,673.96 = 40,142.78 : x
  2. Step 2: Convert to fraction form
    73,676.78/101,673.96 = 40,142.78/x
  3. Step 3: Cross multiply
    73,676.78x = 101,673.96 × 40,142.78
  4. Step 4: Simplify right side
    73,676.78x = 4,081,475,100.30
  5. Step 5: Solve for x
    x = 4,081,475,100.30/73,676.78
  6. Step 6: Final answer
    x = 55,397.04

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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.