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Finding the Fourth Proportional to 73,962.28, 102,067.96 and 40,428.28

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Solution

The fourth proportional to 73,962.28, 102,067.96 and 40,428.28 is: 55,791.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,962.28 : 102,067.96 = 40,428.28 : x
  2. Step 2: Convert to fraction form
    73,962.28/102,067.96 = 40,428.28/x
  3. Step 3: Cross multiply
    73,962.28x = 102,067.96 × 40,428.28
  4. Step 4: Simplify right side
    73,962.28x = 4,126,432,065.91
  5. Step 5: Solve for x
    x = 4,126,432,065.91/73,962.28
  6. Step 6: Final answer
    x = 55,791.03

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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.