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Finding the Fourth Proportional to 83,716.66, 115,559.32 and 55,431.46

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Solution

The fourth proportional to 83,716.66, 115,559.32 and 55,431.46 is: 76,515.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,716.66 : 115,559.32 = 55,431.46 : x
  2. Step 2: Convert to fraction form
    83,716.66/115,559.32 = 55,431.46/x
  3. Step 3: Cross multiply
    83,716.66x = 115,559.32 × 55,431.46
  4. Step 4: Simplify right side
    83,716.66x = 6,405,621,824.21
  5. Step 5: Solve for x
    x = 6,405,621,824.21/83,716.66
  6. Step 6: Final answer
    x = 76,515.50

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