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Finding the Fourth Proportional to 71,720.34, 98,964.45 and 39,883.11

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Solution

The fourth proportional to 71,720.34, 98,964.45 and 39,883.11 is: 55,033.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,720.34 : 98,964.45 = 39,883.11 : x
  2. Step 2: Convert to fraction form
    71,720.34/98,964.45 = 39,883.11/x
  3. Step 3: Cross multiply
    71,720.34x = 98,964.45 × 39,883.11
  4. Step 4: Simplify right side
    71,720.34x = 3,947,010,045.44
  5. Step 5: Solve for x
    x = 3,947,010,045.44/71,720.34
  6. Step 6: Final answer
    x = 55,033.34

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