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Finding the Fourth Proportional to 99,879.84, 149,820.34 and 33,319.78

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Solution

The fourth proportional to 99,879.84, 149,820.34 and 33,319.78 is: 49,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,879.84 : 149,820.34 = 33,319.78 : x
  2. Step 2: Convert to fraction form
    99,879.84/149,820.34 = 33,319.78/x
  3. Step 3: Cross multiply
    99,879.84x = 149,820.34 × 33,319.78
  4. Step 4: Simplify right side
    99,879.84x = 4,991,980,768.33
  5. Step 5: Solve for x
    x = 4,991,980,768.33/99,879.84
  6. Step 6: Final answer
    x = 49,979.86

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