Home / 54,053.01-81,082.25-20,761.40

Finding the Fourth Proportional to 54,053.01, 81,082.25 and 20,761.40

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Solution

The fourth proportional to 54,053.01, 81,082.25 and 20,761.40 is: 31,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,053.01 : 81,082.25 = 20,761.40 : x
  2. Step 2: Convert to fraction form
    54,053.01/81,082.25 = 20,761.40/x
  3. Step 3: Cross multiply
    54,053.01x = 81,082.25 × 20,761.40
  4. Step 4: Simplify right side
    54,053.01x = 1,683,381,201.90
  5. Step 5: Solve for x
    x = 1,683,381,201.90/54,053.01
  6. Step 6: Final answer
    x = 31,143.15

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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.