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Finding the Fourth Proportional to 55,857.41, 83,826.10 and 20,318.66

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Solution

The fourth proportional to 55,857.41, 83,826.10 and 20,318.66 is: 30,492.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,857.41 : 83,826.10 = 20,318.66 : x
  2. Step 2: Convert to fraction form
    55,857.41/83,826.10 = 20,318.66/x
  3. Step 3: Cross multiply
    55,857.41x = 83,826.10 × 20,318.66
  4. Step 4: Simplify right side
    55,857.41x = 1,703,234,259.99
  5. Step 5: Solve for x
    x = 1,703,234,259.99/55,857.41
  6. Step 6: Final answer
    x = 30,492.54

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