Home / 80,249.36-120,308.36-30,301.11

Finding the Fourth Proportional to 80,249.36, 120,308.36 and 30,301.11

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Solution

The fourth proportional to 80,249.36, 120,308.36 and 30,301.11 is: 45,426.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,249.36 : 120,308.36 = 30,301.11 : x
  2. Step 2: Convert to fraction form
    80,249.36/120,308.36 = 30,301.11/x
  3. Step 3: Cross multiply
    80,249.36x = 120,308.36 × 30,301.11
  4. Step 4: Simplify right side
    80,249.36x = 3,645,476,698.77
  5. Step 5: Solve for x
    x = 3,645,476,698.77/80,249.36
  6. Step 6: Final answer
    x = 45,426.87

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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.