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Finding the Fourth Proportional to 70,912.87, 97,855.09 and 39,081.69

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Solution

The fourth proportional to 70,912.87, 97,855.09 and 39,081.69 is: 53,930.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,912.87 : 97,855.09 = 39,081.69 : x
  2. Step 2: Convert to fraction form
    70,912.87/97,855.09 = 39,081.69/x
  3. Step 3: Cross multiply
    70,912.87x = 97,855.09 × 39,081.69
  4. Step 4: Simplify right side
    70,912.87x = 3,824,342,194.60
  5. Step 5: Solve for x
    x = 3,824,342,194.60/70,912.87
  6. Step 6: Final answer
    x = 53,930.16

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