Home / 80,249.32-120,371.10-30,327.40

Finding the Fourth Proportional to 80,249.32, 120,371.10 and 30,327.40

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Solution

The fourth proportional to 80,249.32, 120,371.10 and 30,327.40 is: 45,490.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,249.32 : 120,371.10 = 30,327.40 : x
  2. Step 2: Convert to fraction form
    80,249.32/120,371.10 = 30,327.40/x
  3. Step 3: Cross multiply
    80,249.32x = 120,371.10 × 30,327.40
  4. Step 4: Simplify right side
    80,249.32x = 3,650,542,498.14
  5. Step 5: Solve for x
    x = 3,650,542,498.14/80,249.32
  6. Step 6: Final answer
    x = 45,490.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.