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Finding the Fourth Proportional to 72,102.48, 99,501.84 and 40,274.16

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Solution

The fourth proportional to 72,102.48, 99,501.84 and 40,274.16 is: 55,578.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,102.48 : 99,501.84 = 40,274.16 : x
  2. Step 2: Convert to fraction form
    72,102.48/99,501.84 = 40,274.16/x
  3. Step 3: Cross multiply
    72,102.48x = 99,501.84 × 40,274.16
  4. Step 4: Simplify right side
    72,102.48x = 4,007,353,024.45
  5. Step 5: Solve for x
    x = 4,007,353,024.45/72,102.48
  6. Step 6: Final answer
    x = 55,578.57

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