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Finding the Fourth Proportional to 33,553.80, 50,363.10 and 20,431.80

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Solution

The fourth proportional to 33,553.80, 50,363.10 and 20,431.80 is: 30,667.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,553.80 : 50,363.10 = 20,431.80 : x
  2. Step 2: Convert to fraction form
    33,553.80/50,363.10 = 20,431.80/x
  3. Step 3: Cross multiply
    33,553.80x = 50,363.10 × 20,431.80
  4. Step 4: Simplify right side
    33,553.80x = 1,029,008,786.58
  5. Step 5: Solve for x
    x = 1,029,008,786.58/33,553.80
  6. Step 6: Final answer
    x = 30,667.43

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