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Finding the Fourth Proportional to 92,961.87, 128,288.37 and 50,520.40

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Solution

The fourth proportional to 92,961.87, 128,288.37 and 50,520.40 is: 69,718.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,961.87 : 128,288.37 = 50,520.40 : x
  2. Step 2: Convert to fraction form
    92,961.87/128,288.37 = 50,520.40/x
  3. Step 3: Cross multiply
    92,961.87x = 128,288.37 × 50,520.40
  4. Step 4: Simplify right side
    92,961.87x = 6,481,179,767.75
  5. Step 5: Solve for x
    x = 6,481,179,767.75/92,961.87
  6. Step 6: Final answer
    x = 69,718.69

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