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Finding the Fourth Proportional to 38,466.80, 57,700.20 and 31,986.80

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Solution

The fourth proportional to 38,466.80, 57,700.20 and 31,986.80 is: 47,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,466.80 : 57,700.20 = 31,986.80 : x
  2. Step 2: Convert to fraction form
    38,466.80/57,700.20 = 31,986.80/x
  3. Step 3: Cross multiply
    38,466.80x = 57,700.20 × 31,986.80
  4. Step 4: Simplify right side
    38,466.80x = 1,845,644,757.36
  5. Step 5: Solve for x
    x = 1,845,644,757.36/38,466.80
  6. Step 6: Final answer
    x = 47,980.20

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