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Finding the Fourth Proportional to 81,814.14, 122,721.31 and 70,687.17

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Solution

The fourth proportional to 81,814.14, 122,721.31 and 70,687.17 is: 106,030.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,814.14 : 122,721.31 = 70,687.17 : x
  2. Step 2: Convert to fraction form
    81,814.14/122,721.31 = 70,687.17/x
  3. Step 3: Cross multiply
    81,814.14x = 122,721.31 × 70,687.17
  4. Step 4: Simplify right side
    81,814.14x = 8,674,822,102.59
  5. Step 5: Solve for x
    x = 8,674,822,102.59/81,814.14
  6. Step 6: Final answer
    x = 106,030.84

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