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Finding the Fourth Proportional to 72,368.43, 99,871.62 and 40,102.96

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Solution

The fourth proportional to 72,368.43, 99,871.62 and 40,102.96 is: 55,343.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,368.43 : 99,871.62 = 40,102.96 : x
  2. Step 2: Convert to fraction form
    72,368.43/99,871.62 = 40,102.96/x
  3. Step 3: Cross multiply
    72,368.43x = 99,871.62 × 40,102.96
  4. Step 4: Simplify right side
    72,368.43x = 4,005,147,582.00
  5. Step 5: Solve for x
    x = 4,005,147,582.00/72,368.43
  6. Step 6: Final answer
    x = 55,343.85

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