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Finding the Fourth Proportional to 74,538.77, 111,808.21 and 18,379.80

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Solution

The fourth proportional to 74,538.77, 111,808.21 and 18,379.80 is: 27,569.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,538.77 : 111,808.21 = 18,379.80 : x
  2. Step 2: Convert to fraction form
    74,538.77/111,808.21 = 18,379.80/x
  3. Step 3: Cross multiply
    74,538.77x = 111,808.21 × 18,379.80
  4. Step 4: Simplify right side
    74,538.77x = 2,055,012,395.29
  5. Step 5: Solve for x
    x = 2,055,012,395.29/74,538.77
  6. Step 6: Final answer
    x = 27,569.71

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