Home / 54,278.72-81,408.32-19,218.56

Finding the Fourth Proportional to 54,278.72, 81,408.32 and 19,218.56

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Solution

The fourth proportional to 54,278.72, 81,408.32 and 19,218.56 is: 28,824.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,278.72 : 81,408.32 = 19,218.56 : x
  2. Step 2: Convert to fraction form
    54,278.72/81,408.32 = 19,218.56/x
  3. Step 3: Cross multiply
    54,278.72x = 81,408.32 × 19,218.56
  4. Step 4: Simplify right side
    54,278.72x = 1,564,550,682.42
  5. Step 5: Solve for x
    x = 1,564,550,682.42/54,278.72
  6. Step 6: Final answer
    x = 28,824.38

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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.