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Finding the Fourth Proportional to 79,689.08, 109,850.10 and 65,517.32

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Solution

The fourth proportional to 79,689.08, 109,850.10 and 65,517.32 is: 90,314.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,689.08 : 109,850.10 = 65,517.32 : x
  2. Step 2: Convert to fraction form
    79,689.08/109,850.10 = 65,517.32/x
  3. Step 3: Cross multiply
    79,689.08x = 109,850.10 × 65,517.32
  4. Step 4: Simplify right side
    79,689.08x = 7,197,084,153.73
  5. Step 5: Solve for x
    x = 7,197,084,153.73/79,689.08
  6. Step 6: Final answer
    x = 90,314.56

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