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Finding the Fourth Proportional to 68,361.24, 94,340.76 and 39,678.74

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Solution

The fourth proportional to 68,361.24, 94,340.76 and 39,678.74 is: 54,757.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,361.24 : 94,340.76 = 39,678.74 : x
  2. Step 2: Convert to fraction form
    68,361.24/94,340.76 = 39,678.74/x
  3. Step 3: Cross multiply
    68,361.24x = 94,340.76 × 39,678.74
  4. Step 4: Simplify right side
    68,361.24x = 3,743,322,487.44
  5. Step 5: Solve for x
    x = 3,743,322,487.44/68,361.24
  6. Step 6: Final answer
    x = 54,757.97

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1.5x scale

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.