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Finding the Fourth Proportional to 85,493.47, 128,240.21 and 23,163.97

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Solution

The fourth proportional to 85,493.47, 128,240.21 and 23,163.97 is: 34,745.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,493.47 : 128,240.21 = 23,163.97 : x
  2. Step 2: Convert to fraction form
    85,493.47/128,240.21 = 23,163.97/x
  3. Step 3: Cross multiply
    85,493.47x = 128,240.21 × 23,163.97
  4. Step 4: Simplify right side
    85,493.47x = 2,970,552,261.41
  5. Step 5: Solve for x
    x = 2,970,552,261.41/85,493.47
  6. Step 6: Final answer
    x = 34,745.96

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