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Finding the Fourth Proportional to 71,668.94, 98,902.40 and 39,837.15

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Solution

The fourth proportional to 71,668.94, 98,902.40 and 39,837.15 is: 54,974.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,668.94 : 98,902.40 = 39,837.15 : x
  2. Step 2: Convert to fraction form
    71,668.94/98,902.40 = 39,837.15/x
  3. Step 3: Cross multiply
    71,668.94x = 98,902.40 × 39,837.15
  4. Step 4: Simplify right side
    71,668.94x = 3,939,989,544.97
  5. Step 5: Solve for x
    x = 3,939,989,544.97/71,668.94
  6. Step 6: Final answer
    x = 54,974.86

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