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Finding the Fourth Proportional to 80,057.18, 120,085.86 and 20,892.80

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Solution

The fourth proportional to 80,057.18, 120,085.86 and 20,892.80 is: 31,339.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,057.18 : 120,085.86 = 20,892.80 : x
  2. Step 2: Convert to fraction form
    80,057.18/120,085.86 = 20,892.80/x
  3. Step 3: Cross multiply
    80,057.18x = 120,085.86 × 20,892.80
  4. Step 4: Simplify right side
    80,057.18x = 2,508,929,855.81
  5. Step 5: Solve for x
    x = 2,508,929,855.81/80,057.18
  6. Step 6: Final answer
    x = 31,339.22

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