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Finding the Fourth Proportional to 68,743, 94,850.94 and 40,451.80

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Solution

The fourth proportional to 68,743, 94,850.94 and 40,451.80 is: 55,815.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,743 : 94,850.94 = 40,451.80 : x
  2. Step 2: Convert to fraction form
    68,743/94,850.94 = 40,451.80/x
  3. Step 3: Cross multiply
    68,743x = 94,850.94 × 40,451.80
  4. Step 4: Simplify right side
    68,743x = 3,836,891,254.69
  5. Step 5: Solve for x
    x = 3,836,891,254.69/68,743
  6. Step 6: Final answer
    x = 55,815.01

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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.