Home / 54,279.72-81,409.82-19,219.56

Finding the Fourth Proportional to 54,279.72, 81,409.82 and 19,219.56

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Solution

The fourth proportional to 54,279.72, 81,409.82 and 19,219.56 is: 28,825.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,279.72 : 81,409.82 = 19,219.56 : x
  2. Step 2: Convert to fraction form
    54,279.72/81,409.82 = 19,219.56/x
  3. Step 3: Cross multiply
    54,279.72x = 81,409.82 × 19,219.56
  4. Step 4: Simplify right side
    54,279.72x = 1,564,660,920.08
  5. Step 5: Solve for x
    x = 1,564,660,920.08/54,279.72
  6. Step 6: Final answer
    x = 28,825.88

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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.