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Finding the Fourth Proportional to 73,689.36, 101,691 and 40,155.36

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Solution

The fourth proportional to 73,689.36, 101,691 and 40,155.36 is: 55,414.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,689.36 : 101,691 = 40,155.36 : x
  2. Step 2: Convert to fraction form
    73,689.36/101,691 = 40,155.36/x
  3. Step 3: Cross multiply
    73,689.36x = 101,691 × 40,155.36
  4. Step 4: Simplify right side
    73,689.36x = 4,083,438,713.76
  5. Step 5: Solve for x
    x = 4,083,438,713.76/73,689.36
  6. Step 6: Final answer
    x = 55,414.22

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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.