Home / 80,018.12-120,027.22-20,853.64

Finding the Fourth Proportional to 80,018.12, 120,027.22 and 20,853.64

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Solution

The fourth proportional to 80,018.12, 120,027.22 and 20,853.64 is: 31,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,018.12 : 120,027.22 = 20,853.64 : x
  2. Step 2: Convert to fraction form
    80,018.12/120,027.22 = 20,853.64/x
  3. Step 3: Cross multiply
    80,018.12x = 120,027.22 × 20,853.64
  4. Step 4: Simplify right side
    80,018.12x = 2,503,004,436.08
  5. Step 5: Solve for x
    x = 2,503,004,436.08/80,018.12
  6. Step 6: Final answer
    x = 31,280.47

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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.