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Finding the Fourth Proportional to 54,486.78, 81,730.05 and 14,505.78

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Solution

The fourth proportional to 54,486.78, 81,730.05 and 14,505.78 is: 21,758.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,486.78 : 81,730.05 = 14,505.78 : x
  2. Step 2: Convert to fraction form
    54,486.78/81,730.05 = 14,505.78/x
  3. Step 3: Cross multiply
    54,486.78x = 81,730.05 × 14,505.78
  4. Step 4: Simplify right side
    54,486.78x = 1,185,558,124.69
  5. Step 5: Solve for x
    x = 1,185,558,124.69/54,486.78
  6. Step 6: Final answer
    x = 21,758.64

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