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Finding the Fourth Proportional to 72,561.14, 100,140.63 and 40,301.95

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Solution

The fourth proportional to 72,561.14, 100,140.63 and 40,301.95 is: 55,620.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,561.14 : 100,140.63 = 40,301.95 : x
  2. Step 2: Convert to fraction form
    72,561.14/100,140.63 = 40,301.95/x
  3. Step 3: Cross multiply
    72,561.14x = 100,140.63 × 40,301.95
  4. Step 4: Simplify right side
    72,561.14x = 4,035,862,162.53
  5. Step 5: Solve for x
    x = 4,035,862,162.53/72,561.14
  6. Step 6: Final answer
    x = 55,620.16

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