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Finding the Fourth Proportional to 68,688.20, 103,037.10 and 27,129.80

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Solution

The fourth proportional to 68,688.20, 103,037.10 and 27,129.80 is: 40,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,688.20 : 103,037.10 = 27,129.80 : x
  2. Step 2: Convert to fraction form
    68,688.20/103,037.10 = 27,129.80/x
  3. Step 3: Cross multiply
    68,688.20x = 103,037.10 × 27,129.80
  4. Step 4: Simplify right side
    68,688.20x = 2,795,375,915.58
  5. Step 5: Solve for x
    x = 2,795,375,915.58/68,688.20
  6. Step 6: Final answer
    x = 40,696.60

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