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Finding the Fourth Proportional to 51,739.71, 71,401.49 and 31,321.54

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Solution

The fourth proportional to 51,739.71, 71,401.49 and 31,321.54 is: 43,224.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,739.71 : 71,401.49 = 31,321.54 : x
  2. Step 2: Convert to fraction form
    51,739.71/71,401.49 = 31,321.54/x
  3. Step 3: Cross multiply
    51,739.71x = 71,401.49 × 31,321.54
  4. Step 4: Simplify right side
    51,739.71x = 2,236,404,625.09
  5. Step 5: Solve for x
    x = 2,236,404,625.09/51,739.71
  6. Step 6: Final answer
    x = 43,224.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.