Home / 80,531.28-111,138.31-44,721.29

Finding the Fourth Proportional to 80,531.28, 111,138.31 and 44,721.29

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Solution

The fourth proportional to 80,531.28, 111,138.31 and 44,721.29 is: 61,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,531.28 : 111,138.31 = 44,721.29 : x
  2. Step 2: Convert to fraction form
    80,531.28/111,138.31 = 44,721.29/x
  3. Step 3: Cross multiply
    80,531.28x = 111,138.31 × 44,721.29
  4. Step 4: Simplify right side
    80,531.28x = 4,970,247,924.13
  5. Step 5: Solve for x
    x = 4,970,247,924.13/80,531.28
  6. Step 6: Final answer
    x = 61,718.23

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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.