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Finding the Fourth Proportional to 67,992.60, 102,007.36 and 20,605.78

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Solution

The fourth proportional to 67,992.60, 102,007.36 and 20,605.78 is: 30,914.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,992.60 : 102,007.36 = 20,605.78 : x
  2. Step 2: Convert to fraction form
    67,992.60/102,007.36 = 20,605.78/x
  3. Step 3: Cross multiply
    67,992.60x = 102,007.36 × 20,605.78
  4. Step 4: Simplify right side
    67,992.60x = 2,101,941,270.06
  5. Step 5: Solve for x
    x = 2,101,941,270.06/67,992.60
  6. Step 6: Final answer
    x = 30,914.26

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