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Finding the Fourth Proportional to 68,710.52, 94,839.18 and 40,425.32

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Solution

The fourth proportional to 68,710.52, 94,839.18 and 40,425.32 is: 55,797.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,710.52 : 94,839.18 = 40,425.32 : x
  2. Step 2: Convert to fraction form
    68,710.52/94,839.18 = 40,425.32/x
  3. Step 3: Cross multiply
    68,710.52x = 94,839.18 × 40,425.32
  4. Step 4: Simplify right side
    68,710.52x = 3,833,904,200.04
  5. Step 5: Solve for x
    x = 3,833,904,200.04/68,710.52
  6. Step 6: Final answer
    x = 55,797.92

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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.