Home / 80,997.22-121,496.91-28,408.24

Finding the Fourth Proportional to 80,997.22, 121,496.91 and 28,408.24

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Solution

The fourth proportional to 80,997.22, 121,496.91 and 28,408.24 is: 42,612.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,997.22 : 121,496.91 = 28,408.24 : x
  2. Step 2: Convert to fraction form
    80,997.22/121,496.91 = 28,408.24/x
  3. Step 3: Cross multiply
    80,997.22x = 121,496.91 × 28,408.24
  4. Step 4: Simplify right side
    80,997.22x = 3,451,513,378.54
  5. Step 5: Solve for x
    x = 3,451,513,378.54/80,997.22
  6. Step 6: Final answer
    x = 42,612.74

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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.