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Finding the Fourth Proportional to 68,775, 102,696.84 and 54,575.62

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Solution

The fourth proportional to 68,775, 102,696.84 and 54,575.62 is: 81,493.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,775 : 102,696.84 = 54,575.62 : x
  2. Step 2: Convert to fraction form
    68,775/102,696.84 = 54,575.62/x
  3. Step 3: Cross multiply
    68,775x = 102,696.84 × 54,575.62
  4. Step 4: Simplify right side
    68,775x = 5,604,743,715.04
  5. Step 5: Solve for x
    x = 5,604,743,715.04/68,775
  6. Step 6: Final answer
    x = 81,493.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.