Home / 80,008.38-120,019.50-20,843.91

Finding the Fourth Proportional to 80,008.38, 120,019.50 and 20,843.91

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Solution

The fourth proportional to 80,008.38, 120,019.50 and 20,843.91 is: 31,267.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,008.38 : 120,019.50 = 20,843.91 : x
  2. Step 2: Convert to fraction form
    80,008.38/120,019.50 = 20,843.91/x
  3. Step 3: Cross multiply
    80,008.38x = 120,019.50 × 20,843.91
  4. Step 4: Simplify right side
    80,008.38x = 2,501,675,656.25
  5. Step 5: Solve for x
    x = 2,501,675,656.25/80,008.38
  6. Step 6: Final answer
    x = 31,267.67

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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.