Home / 54,278.85-81,398.28-18,731.10

Finding the Fourth Proportional to 54,278.85, 81,398.28 and 18,731.10

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Solution

The fourth proportional to 54,278.85, 81,398.28 and 18,731.10 is: 28,089.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,278.85 : 81,398.28 = 18,731.10 : x
  2. Step 2: Convert to fraction form
    54,278.85/81,398.28 = 18,731.10/x
  3. Step 3: Cross multiply
    54,278.85x = 81,398.28 × 18,731.10
  4. Step 4: Simplify right side
    54,278.85x = 1,524,679,161.11
  5. Step 5: Solve for x
    x = 1,524,679,161.11/54,278.85
  6. Step 6: Final answer
    x = 28,089.75

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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.