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Finding the Fourth Proportional to 30,081.94, 45,148.83 and 20,854.42

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Solution

The fourth proportional to 30,081.94, 45,148.83 and 20,854.42 is: 31,299.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,081.94 : 45,148.83 = 20,854.42 : x
  2. Step 2: Convert to fraction form
    30,081.94/45,148.83 = 20,854.42/x
  3. Step 3: Cross multiply
    30,081.94x = 45,148.83 × 20,854.42
  4. Step 4: Simplify right side
    30,081.94x = 941,552,663.33
  5. Step 5: Solve for x
    x = 941,552,663.33/30,081.94
  6. Step 6: Final answer
    x = 31,299.60

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