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Finding the Fourth Proportional to 82,813.86, 123,839.28 and 61,506.84

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Solution

The fourth proportional to 82,813.86, 123,839.28 and 61,506.84 is: 91,976.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,813.86 : 123,839.28 = 61,506.84 : x
  2. Step 2: Convert to fraction form
    82,813.86/123,839.28 = 61,506.84/x
  3. Step 3: Cross multiply
    82,813.86x = 123,839.28 × 61,506.84
  4. Step 4: Simplify right side
    82,813.86x = 7,616,962,780.68
  5. Step 5: Solve for x
    x = 7,616,962,780.68/82,813.86
  6. Step 6: Final answer
    x = 91,976.91

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