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Finding the Fourth Proportional to 72,158.95, 99,579.50 and 40,327.85

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Solution

The fourth proportional to 72,158.95, 99,579.50 and 40,327.85 is: 55,652.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,158.95 : 99,579.50 = 40,327.85 : x
  2. Step 2: Convert to fraction form
    72,158.95/99,579.50 = 40,327.85/x
  3. Step 3: Cross multiply
    72,158.95x = 99,579.50 × 40,327.85
  4. Step 4: Simplify right side
    72,158.95x = 4,015,827,088.67
  5. Step 5: Solve for x
    x = 4,015,827,088.67/72,158.95
  6. Step 6: Final answer
    x = 55,652.51

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