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Finding the Fourth Proportional to 68,361.75, 94,342.86 and 40,076.55

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Solution

The fourth proportional to 68,361.75, 94,342.86 and 40,076.55 is: 55,307.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,361.75 : 94,342.86 = 40,076.55 : x
  2. Step 2: Convert to fraction form
    68,361.75/94,342.86 = 40,076.55/x
  3. Step 3: Cross multiply
    68,361.75x = 94,342.86 × 40,076.55
  4. Step 4: Simplify right side
    68,361.75x = 3,780,936,345.93
  5. Step 5: Solve for x
    x = 3,780,936,345.93/68,361.75
  6. Step 6: Final answer
    x = 55,307.78

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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.