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Finding the Fourth Proportional to 47,947.73, 71,921.49 and 12,887.39

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Solution

The fourth proportional to 47,947.73, 71,921.49 and 12,887.39 is: 19,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,947.73 : 71,921.49 = 12,887.39 : x
  2. Step 2: Convert to fraction form
    47,947.73/71,921.49 = 12,887.39/x
  3. Step 3: Cross multiply
    47,947.73x = 71,921.49 × 12,887.39
  4. Step 4: Simplify right side
    47,947.73x = 926,879,931.40
  5. Step 5: Solve for x
    x = 926,879,931.40/47,947.73
  6. Step 6: Final answer
    x = 19,331.05

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