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Finding the Fourth Proportional to 72,029.04, 99,396.05 and 40,199.98

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Solution

The fourth proportional to 72,029.04, 99,396.05 and 40,199.98 is: 55,473.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,029.04 : 99,396.05 = 40,199.98 : x
  2. Step 2: Convert to fraction form
    72,029.04/99,396.05 = 40,199.98/x
  3. Step 3: Cross multiply
    72,029.04x = 99,396.05 × 40,199.98
  4. Step 4: Simplify right side
    72,029.04x = 3,995,719,222.08
  5. Step 5: Solve for x
    x = 3,995,719,222.08/72,029.04
  6. Step 6: Final answer
    x = 55,473.73

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