Home / 80,949.60-111,665.52-47,409.12

Finding the Fourth Proportional to 80,949.60, 111,665.52 and 47,409.12

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Solution

The fourth proportional to 80,949.60, 111,665.52 and 47,409.12 is: 65,398.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,949.60 : 111,665.52 = 47,409.12 : x
  2. Step 2: Convert to fraction form
    80,949.60/111,665.52 = 47,409.12/x
  3. Step 3: Cross multiply
    80,949.60x = 111,665.52 × 47,409.12
  4. Step 4: Simplify right side
    80,949.60x = 5,293,964,037.54
  5. Step 5: Solve for x
    x = 5,293,964,037.54/80,949.60
  6. Step 6: Final answer
    x = 65,398.27

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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.