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Finding the Fourth Proportional to 80,868.78, 121,220.55 and 28,234.98

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Solution

The fourth proportional to 80,868.78, 121,220.55 and 28,234.98 is: 42,323.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,868.78 : 121,220.55 = 28,234.98 : x
  2. Step 2: Convert to fraction form
    80,868.78/121,220.55 = 28,234.98/x
  3. Step 3: Cross multiply
    80,868.78x = 121,220.55 × 28,234.98
  4. Step 4: Simplify right side
    80,868.78x = 3,422,659,804.84
  5. Step 5: Solve for x
    x = 3,422,659,804.84/80,868.78
  6. Step 6: Final answer
    x = 42,323.62

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