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Finding the Fourth Proportional to 57,182.72, 85,742.40 and 19,722.56

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Solution

The fourth proportional to 57,182.72, 85,742.40 and 19,722.56 is: 29,572.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,182.72 : 85,742.40 = 19,722.56 : x
  2. Step 2: Convert to fraction form
    57,182.72/85,742.40 = 19,722.56/x
  3. Step 3: Cross multiply
    57,182.72x = 85,742.40 × 19,722.56
  4. Step 4: Simplify right side
    57,182.72x = 1,691,059,628.54
  5. Step 5: Solve for x
    x = 1,691,059,628.54/57,182.72
  6. Step 6: Final answer
    x = 29,572.91

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