Home / 54,172.26-81,263.79-20,429.73

Finding the Fourth Proportional to 54,172.26, 81,263.79 and 20,429.73

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Solution

The fourth proportional to 54,172.26, 81,263.79 and 20,429.73 is: 30,646.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,172.26 : 81,263.79 = 20,429.73 : x
  2. Step 2: Convert to fraction form
    54,172.26/81,263.79 = 20,429.73/x
  3. Step 3: Cross multiply
    54,172.26x = 81,263.79 × 20,429.73
  4. Step 4: Simplify right side
    54,172.26x = 1,660,197,288.48
  5. Step 5: Solve for x
    x = 1,660,197,288.48/54,172.26
  6. Step 6: Final answer
    x = 30,646.63

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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.