Home / 55,203.66-82,806.85-20,143.31

Finding the Fourth Proportional to 55,203.66, 82,806.85 and 20,143.31

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Solution

The fourth proportional to 55,203.66, 82,806.85 and 20,143.31 is: 30,215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,203.66 : 82,806.85 = 20,143.31 : x
  2. Step 2: Convert to fraction form
    55,203.66/82,806.85 = 20,143.31/x
  3. Step 3: Cross multiply
    55,203.66x = 82,806.85 × 20,143.31
  4. Step 4: Simplify right side
    55,203.66x = 1,668,004,049.67
  5. Step 5: Solve for x
    x = 1,668,004,049.67/55,203.66
  6. Step 6: Final answer
    x = 30,215.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.