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Finding the Fourth Proportional to 73,912.56, 101,999.16 and 40,378.80

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Solution

The fourth proportional to 73,912.56, 101,999.16 and 40,378.80 is: 55,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,912.56 : 101,999.16 = 40,378.80 : x
  2. Step 2: Convert to fraction form
    73,912.56/101,999.16 = 40,378.80/x
  3. Step 3: Cross multiply
    73,912.56x = 101,999.16 × 40,378.80
  4. Step 4: Simplify right side
    73,912.56x = 4,118,603,681.81
  5. Step 5: Solve for x
    x = 4,118,603,681.81/73,912.56
  6. Step 6: Final answer
    x = 55,722.65

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