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Finding the Fourth Proportional to 77,148.38, 115,731.89 and 27,218.23

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Solution

The fourth proportional to 77,148.38, 115,731.89 and 27,218.23 is: 40,830.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,148.38 : 115,731.89 = 27,218.23 : x
  2. Step 2: Convert to fraction form
    77,148.38/115,731.89 = 27,218.23/x
  3. Step 3: Cross multiply
    77,148.38x = 115,731.89 × 27,218.23
  4. Step 4: Simplify right side
    77,148.38x = 3,150,017,200.35
  5. Step 5: Solve for x
    x = 3,150,017,200.35/77,148.38
  6. Step 6: Final answer
    x = 40,830.63

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