Home / 54,976.43-75,872.09-31,107.70

Finding the Fourth Proportional to 54,976.43, 75,872.09 and 31,107.70

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Solution

The fourth proportional to 54,976.43, 75,872.09 and 31,107.70 is: 42,931.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,976.43 : 75,872.09 = 31,107.70 : x
  2. Step 2: Convert to fraction form
    54,976.43/75,872.09 = 31,107.70/x
  3. Step 3: Cross multiply
    54,976.43x = 75,872.09 × 31,107.70
  4. Step 4: Simplify right side
    54,976.43x = 2,360,205,679.19
  5. Step 5: Solve for x
    x = 2,360,205,679.19/54,976.43
  6. Step 6: Final answer
    x = 42,931.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.