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Finding the Fourth Proportional to 43,555.46, 65,308.89 and 21,320.96

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Solution

The fourth proportional to 43,555.46, 65,308.89 and 21,320.96 is: 31,969.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,555.46 : 65,308.89 = 21,320.96 : x
  2. Step 2: Convert to fraction form
    43,555.46/65,308.89 = 21,320.96/x
  3. Step 3: Cross multiply
    43,555.46x = 65,308.89 × 21,320.96
  4. Step 4: Simplify right side
    43,555.46x = 1,392,448,231.33
  5. Step 5: Solve for x
    x = 1,392,448,231.33/43,555.46
  6. Step 6: Final answer
    x = 31,969.54

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