Home / 81,744.24-122,543.70-31,812.66

Finding the Fourth Proportional to 81,744.24, 122,543.70 and 31,812.66

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Solution

The fourth proportional to 81,744.24, 122,543.70 and 31,812.66 is: 47,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,744.24 : 122,543.70 = 31,812.66 : x
  2. Step 2: Convert to fraction form
    81,744.24/122,543.70 = 31,812.66/x
  3. Step 3: Cross multiply
    81,744.24x = 122,543.70 × 31,812.66
  4. Step 4: Simplify right side
    81,744.24x = 3,898,441,063.24
  5. Step 5: Solve for x
    x = 3,898,441,063.24/81,744.24
  6. Step 6: Final answer
    x = 47,690.71

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