Home / 30,689.92-42,512.48-30,067.84

Finding the Fourth Proportional to 30,689.92, 42,512.48 and 30,067.84

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Solution

The fourth proportional to 30,689.92, 42,512.48 and 30,067.84 is: 41,650.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,689.92 : 42,512.48 = 30,067.84 : x
  2. Step 2: Convert to fraction form
    30,689.92/42,512.48 = 30,067.84/x
  3. Step 3: Cross multiply
    30,689.92x = 42,512.48 × 30,067.84
  4. Step 4: Simplify right side
    30,689.92x = 1,278,258,446.64
  5. Step 5: Solve for x
    x = 1,278,258,446.64/30,689.92
  6. Step 6: Final answer
    x = 41,650.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.