Home / 54,109.85-81,176.31-31,939.74

Finding the Fourth Proportional to 54,109.85, 81,176.31 and 31,939.74

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Solution

The fourth proportional to 54,109.85, 81,176.31 and 31,939.74 is: 47,916.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,109.85 : 81,176.31 = 31,939.74 : x
  2. Step 2: Convert to fraction form
    54,109.85/81,176.31 = 31,939.74/x
  3. Step 3: Cross multiply
    54,109.85x = 81,176.31 × 31,939.74
  4. Step 4: Simplify right side
    54,109.85x = 2,592,750,235.56
  5. Step 5: Solve for x
    x = 2,592,750,235.56/54,109.85
  6. Step 6: Final answer
    x = 47,916.42

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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.