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Finding the Fourth Proportional to 72,131.04, 99,578.16 and 49,736.16

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Solution

The fourth proportional to 72,131.04, 99,578.16 and 49,736.16 is: 68,661.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,131.04 : 99,578.16 = 49,736.16 : x
  2. Step 2: Convert to fraction form
    72,131.04/99,578.16 = 49,736.16/x
  3. Step 3: Cross multiply
    72,131.04x = 99,578.16 × 49,736.16
  4. Step 4: Simplify right side
    72,131.04x = 4,952,635,298.27
  5. Step 5: Solve for x
    x = 4,952,635,298.27/72,131.04
  6. Step 6: Final answer
    x = 68,661.64

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