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Finding the Fourth Proportional to 68,172.39, 94,076.78 and 39,882.87

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Solution

The fourth proportional to 68,172.39, 94,076.78 and 39,882.87 is: 55,037.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,172.39 : 94,076.78 = 39,882.87 : x
  2. Step 2: Convert to fraction form
    68,172.39/94,076.78 = 39,882.87/x
  3. Step 3: Cross multiply
    68,172.39x = 94,076.78 × 39,882.87
  4. Step 4: Simplify right side
    68,172.39x = 3,752,051,787.34
  5. Step 5: Solve for x
    x = 3,752,051,787.34/68,172.39
  6. Step 6: Final answer
    x = 55,037.70

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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.