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Finding the Fourth Proportional to 30,644.19, 45,867.67 and 20,728.85

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Solution

The fourth proportional to 30,644.19, 45,867.67 and 20,728.85 is: 31,026.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,644.19 : 45,867.67 = 20,728.85 : x
  2. Step 2: Convert to fraction form
    30,644.19/45,867.67 = 20,728.85/x
  3. Step 3: Cross multiply
    30,644.19x = 45,867.67 × 20,728.85
  4. Step 4: Simplify right side
    30,644.19x = 950,783,770.12
  5. Step 5: Solve for x
    x = 950,783,770.12/30,644.19
  6. Step 6: Final answer
    x = 31,026.56

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