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Finding the Fourth Proportional to 80,034.18, 120,051.36 and 20,869.80

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Solution

The fourth proportional to 80,034.18, 120,051.36 and 20,869.80 is: 31,304.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,034.18 : 120,051.36 = 20,869.80 : x
  2. Step 2: Convert to fraction form
    80,034.18/120,051.36 = 20,869.80/x
  3. Step 3: Cross multiply
    80,034.18x = 120,051.36 × 20,869.80
  4. Step 4: Simplify right side
    80,034.18x = 2,505,447,872.93
  5. Step 5: Solve for x
    x = 2,505,447,872.93/80,034.18
  6. Step 6: Final answer
    x = 31,304.72

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