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Finding the Fourth Proportional to 40,697.29, 61,047.56 and 12,620.26

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Solution

The fourth proportional to 40,697.29, 61,047.56 and 12,620.26 is: 18,930.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,697.29 : 61,047.56 = 12,620.26 : x
  2. Step 2: Convert to fraction form
    40,697.29/61,047.56 = 12,620.26/x
  3. Step 3: Cross multiply
    40,697.29x = 61,047.56 × 12,620.26
  4. Step 4: Simplify right side
    40,697.29x = 770,436,079.57
  5. Step 5: Solve for x
    x = 770,436,079.57/40,697.29
  6. Step 6: Final answer
    x = 18,930.89

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