Home / 80,721.92-111,409.60-47,181.44

Finding the Fourth Proportional to 80,721.92, 111,409.60 and 47,181.44

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Solution

The fourth proportional to 80,721.92, 111,409.60 and 47,181.44 is: 65,118.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,721.92 : 111,409.60 = 47,181.44 : x
  2. Step 2: Convert to fraction form
    80,721.92/111,409.60 = 47,181.44/x
  3. Step 3: Cross multiply
    80,721.92x = 111,409.60 × 47,181.44
  4. Step 4: Simplify right side
    80,721.92x = 5,256,465,357.82
  5. Step 5: Solve for x
    x = 5,256,465,357.82/80,721.92
  6. Step 6: Final answer
    x = 65,118.19

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1.5x scale

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.