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Finding the Fourth Proportional to 61,591.68, 84,939.84 and 40,363.20

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Solution

The fourth proportional to 61,591.68, 84,939.84 and 40,363.20 is: 55,664.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,591.68 : 84,939.84 = 40,363.20 : x
  2. Step 2: Convert to fraction form
    61,591.68/84,939.84 = 40,363.20/x
  3. Step 3: Cross multiply
    61,591.68x = 84,939.84 × 40,363.20
  4. Step 4: Simplify right side
    61,591.68x = 3,428,443,749.89
  5. Step 5: Solve for x
    x = 3,428,443,749.89/61,591.68
  6. Step 6: Final answer
    x = 55,664.07

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