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Finding the Fourth Proportional to 53,661.28, 80,484.17 and 18,116.15

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Solution

The fourth proportional to 53,661.28, 80,484.17 and 18,116.15 is: 27,171.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,661.28 : 80,484.17 = 18,116.15 : x
  2. Step 2: Convert to fraction form
    53,661.28/80,484.17 = 18,116.15/x
  3. Step 3: Cross multiply
    53,661.28x = 80,484.17 × 18,116.15
  4. Step 4: Simplify right side
    53,661.28x = 1,458,063,296.35
  5. Step 5: Solve for x
    x = 1,458,063,296.35/53,661.28
  6. Step 6: Final answer
    x = 27,171.61

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