Home / 80,941.45-121,183.22-42,904.05

Finding the Fourth Proportional to 80,941.45, 121,183.22 and 42,904.05

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Solution

The fourth proportional to 80,941.45, 121,183.22 and 42,904.05 is: 64,234.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,941.45 : 121,183.22 = 42,904.05 : x
  2. Step 2: Convert to fraction form
    80,941.45/121,183.22 = 42,904.05/x
  3. Step 3: Cross multiply
    80,941.45x = 121,183.22 × 42,904.05
  4. Step 4: Simplify right side
    80,941.45x = 5,199,251,545.37
  5. Step 5: Solve for x
    x = 5,199,251,545.37/80,941.45
  6. Step 6: Final answer
    x = 64,234.72

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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.