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Finding the Fourth Proportional to 72,757.82, 109,137.54 and 20,167.76

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Solution

The fourth proportional to 72,757.82, 109,137.54 and 20,167.76 is: 30,251.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,757.82 : 109,137.54 = 20,167.76 : x
  2. Step 2: Convert to fraction form
    72,757.82/109,137.54 = 20,167.76/x
  3. Step 3: Cross multiply
    72,757.82x = 109,137.54 × 20,167.76
  4. Step 4: Simplify right side
    72,757.82x = 2,201,059,713.71
  5. Step 5: Solve for x
    x = 2,201,059,713.71/72,757.82
  6. Step 6: Final answer
    x = 30,251.86

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