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Finding the Fourth Proportional to 57,288.40, 85,922.64 and 15,168.72

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Solution

The fourth proportional to 57,288.40, 85,922.64 and 15,168.72 is: 22,750.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,288.40 : 85,922.64 = 15,168.72 : x
  2. Step 2: Convert to fraction form
    57,288.40/85,922.64 = 15,168.72/x
  3. Step 3: Cross multiply
    57,288.40x = 85,922.64 × 15,168.72
  4. Step 4: Simplify right side
    57,288.40x = 1,303,336,467.82
  5. Step 5: Solve for x
    x = 1,303,336,467.82/57,288.40
  6. Step 6: Final answer
    x = 22,750.44

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