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Finding the Fourth Proportional to 51,991.92, 77,987.19 and 12,548.85

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Solution

The fourth proportional to 51,991.92, 77,987.19 and 12,548.85 is: 18,823.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,991.92 : 77,987.19 = 12,548.85 : x
  2. Step 2: Convert to fraction form
    51,991.92/77,987.19 = 12,548.85/x
  3. Step 3: Cross multiply
    51,991.92x = 77,987.19 × 12,548.85
  4. Step 4: Simplify right side
    51,991.92x = 978,649,549.23
  5. Step 5: Solve for x
    x = 978,649,549.23/51,991.92
  6. Step 6: Final answer
    x = 18,823.11

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