Home / 54,424.82-81,621.76-21,137.78

Finding the Fourth Proportional to 54,424.82, 81,621.76 and 21,137.78

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Solution

The fourth proportional to 54,424.82, 81,621.76 and 21,137.78 is: 31,700.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,424.82 : 81,621.76 = 21,137.78 : x
  2. Step 2: Convert to fraction form
    54,424.82/81,621.76 = 21,137.78/x
  3. Step 3: Cross multiply
    54,424.82x = 81,621.76 × 21,137.78
  4. Step 4: Simplify right side
    54,424.82x = 1,725,302,806.09
  5. Step 5: Solve for x
    x = 1,725,302,806.09/54,424.82
  6. Step 6: Final answer
    x = 31,700.66

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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.