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Finding the Fourth Proportional to 76,893.20, 115,392 and 26,972.88

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Solution

The fourth proportional to 76,893.20, 115,392 and 26,972.88 is: 40,477.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,893.20 : 115,392 = 26,972.88 : x
  2. Step 2: Convert to fraction form
    76,893.20/115,392 = 26,972.88/x
  3. Step 3: Cross multiply
    76,893.20x = 115,392 × 26,972.88
  4. Step 4: Simplify right side
    76,893.20x = 3,112,454,568.96
  5. Step 5: Solve for x
    x = 3,112,454,568.96/76,893.20
  6. Step 6: Final answer
    x = 40,477.63

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