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Finding the Fourth Proportional to 68,474.12, 94,484.90 and 38,255.69

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Solution

The fourth proportional to 68,474.12, 94,484.90 and 38,255.69 is: 52,787.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,474.12 : 94,484.90 = 38,255.69 : x
  2. Step 2: Convert to fraction form
    68,474.12/94,484.90 = 38,255.69/x
  3. Step 3: Cross multiply
    68,474.12x = 94,484.90 × 38,255.69
  4. Step 4: Simplify right side
    68,474.12x = 3,614,584,380.38
  5. Step 5: Solve for x
    x = 3,614,584,380.38/68,474.12
  6. Step 6: Final answer
    x = 52,787.60

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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.