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Finding the Fourth Proportional to 78,945.43, 108,945.09 and 43,135.53

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Solution

The fourth proportional to 78,945.43, 108,945.09 and 43,135.53 is: 59,527.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,945.43 : 108,945.09 = 43,135.53 : x
  2. Step 2: Convert to fraction form
    78,945.43/108,945.09 = 43,135.53/x
  3. Step 3: Cross multiply
    78,945.43x = 108,945.09 × 43,135.53
  4. Step 4: Simplify right side
    78,945.43x = 4,699,403,982.37
  5. Step 5: Solve for x
    x = 4,699,403,982.37/78,945.43
  6. Step 6: Final answer
    x = 59,527.25

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