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Finding the Fourth Proportional to 31,092.92, 46,638.90 and 7,719.56

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Solution

The fourth proportional to 31,092.92, 46,638.90 and 7,719.56 is: 11,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,092.92 : 46,638.90 = 7,719.56 : x
  2. Step 2: Convert to fraction form
    31,092.92/46,638.90 = 7,719.56/x
  3. Step 3: Cross multiply
    31,092.92x = 46,638.90 × 7,719.56
  4. Step 4: Simplify right side
    31,092.92x = 360,031,786.88
  5. Step 5: Solve for x
    x = 360,031,786.88/31,092.92
  6. Step 6: Final answer
    x = 11,579.22

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