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Finding the Fourth Proportional to 68,716.80, 103,084.80 and 29,273.60

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Solution

The fourth proportional to 68,716.80, 103,084.80 and 29,273.60 is: 43,914.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,716.80 : 103,084.80 = 29,273.60 : x
  2. Step 2: Convert to fraction form
    68,716.80/103,084.80 = 29,273.60/x
  3. Step 3: Cross multiply
    68,716.80x = 103,084.80 × 29,273.60
  4. Step 4: Simplify right side
    68,716.80x = 3,017,663,201.28
  5. Step 5: Solve for x
    x = 3,017,663,201.28/68,716.80
  6. Step 6: Final answer
    x = 43,914.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.