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Finding the Fourth Proportional to 70,911.72, 97,858.84 and 39,081.78

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Solution

The fourth proportional to 70,911.72, 97,858.84 and 39,081.78 is: 53,933.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,911.72 : 97,858.84 = 39,081.78 : x
  2. Step 2: Convert to fraction form
    70,911.72/97,858.84 = 39,081.78/x
  3. Step 3: Cross multiply
    70,911.72x = 97,858.84 × 39,081.78
  4. Step 4: Simplify right side
    70,911.72x = 3,824,497,655.94
  5. Step 5: Solve for x
    x = 3,824,497,655.94/70,911.72
  6. Step 6: Final answer
    x = 53,933.22

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