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Finding the Fourth Proportional to 57,950.72, 86,921.76 and 18,512

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Solution

The fourth proportional to 57,950.72, 86,921.76 and 18,512 is: 27,766.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,950.72 : 86,921.76 = 18,512 : x
  2. Step 2: Convert to fraction form
    57,950.72/86,921.76 = 18,512/x
  3. Step 3: Cross multiply
    57,950.72x = 86,921.76 × 18,512
  4. Step 4: Simplify right side
    57,950.72x = 1,609,095,621.12
  5. Step 5: Solve for x
    x = 1,609,095,621.12/57,950.72
  6. Step 6: Final answer
    x = 27,766.62

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