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Finding the Fourth Proportional to 68,720.37, 102,905.55 and 45,275.73

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Solution

The fourth proportional to 68,720.37, 102,905.55 and 45,275.73 is: 67,798.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,720.37 : 102,905.55 = 45,275.73 : x
  2. Step 2: Convert to fraction form
    68,720.37/102,905.55 = 45,275.73/x
  3. Step 3: Cross multiply
    68,720.37x = 102,905.55 × 45,275.73
  4. Step 4: Simplify right side
    68,720.37x = 4,659,123,897.30
  5. Step 5: Solve for x
    x = 4,659,123,897.30/68,720.37
  6. Step 6: Final answer
    x = 67,798.29

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