Home / 81,936.80-122,905.58-28,628.54

Finding the Fourth Proportional to 81,936.80, 122,905.58 and 28,628.54

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Solution

The fourth proportional to 81,936.80, 122,905.58 and 28,628.54 is: 42,942.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,936.80 : 122,905.58 = 28,628.54 : x
  2. Step 2: Convert to fraction form
    81,936.80/122,905.58 = 28,628.54/x
  3. Step 3: Cross multiply
    81,936.80x = 122,905.58 × 28,628.54
  4. Step 4: Simplify right side
    81,936.80x = 3,518,607,313.25
  5. Step 5: Solve for x
    x = 3,518,607,313.25/81,936.80
  6. Step 6: Final answer
    x = 42,942.94

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