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Finding the Fourth Proportional to 68,387.52, 94,390.52 and 40,102.32

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Solution

The fourth proportional to 68,387.52, 94,390.52 and 40,102.32 is: 55,350.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,387.52 : 94,390.52 = 40,102.32 : x
  2. Step 2: Convert to fraction form
    68,387.52/94,390.52 = 40,102.32/x
  3. Step 3: Cross multiply
    68,387.52x = 94,390.52 × 40,102.32
  4. Step 4: Simplify right side
    68,387.52x = 3,785,278,165.54
  5. Step 5: Solve for x
    x = 3,785,278,165.54/68,387.52
  6. Step 6: Final answer
    x = 55,350.43

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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.