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Finding the Fourth Proportional to 72,212.99, 99,667.70 and 48,381.21

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Solution

The fourth proportional to 72,212.99, 99,667.70 and 48,381.21 is: 66,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,212.99 : 99,667.70 = 48,381.21 : x
  2. Step 2: Convert to fraction form
    72,212.99/99,667.70 = 48,381.21/x
  3. Step 3: Cross multiply
    72,212.99x = 99,667.70 × 48,381.21
  4. Step 4: Simplify right side
    72,212.99x = 4,822,043,863.44
  5. Step 5: Solve for x
    x = 4,822,043,863.44/72,212.99
  6. Step 6: Final answer
    x = 66,775.30

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