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Finding the Fourth Proportional to 68,500.20, 102,750.30 and 19,245.80

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Solution

The fourth proportional to 68,500.20, 102,750.30 and 19,245.80 is: 28,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,500.20 : 102,750.30 = 19,245.80 : x
  2. Step 2: Convert to fraction form
    68,500.20/102,750.30 = 19,245.80/x
  3. Step 3: Cross multiply
    68,500.20x = 102,750.30 × 19,245.80
  4. Step 4: Simplify right side
    68,500.20x = 1,977,511,723.74
  5. Step 5: Solve for x
    x = 1,977,511,723.74/68,500.20
  6. Step 6: Final answer
    x = 28,868.70

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