Home / 80,087,672.70-120,131,509.05-43,681,995.90

Finding the Fourth Proportional to 80,087,672.70, 120,131,509.05 and 43,681,995.90

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Solution

The fourth proportional to 80,087,672.70, 120,131,509.05 and 43,681,995.90 is: 65,522,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,087,672.70 : 120,131,509.05 = 43,681,995.90 : x
  2. Step 2: Convert to fraction form
    80,087,672.70/120,131,509.05 = 43,681,995.90/x
  3. Step 3: Cross multiply
    80,087,672.70x = 120,131,509.05 × 43,681,995.90
  4. Step 4: Simplify right side
    80,087,672.70x = 5,247,584,085,782,913
  5. Step 5: Solve for x
    x = 5,247,584,085,782,913/80,087,672.70
  6. Step 6: Final answer
    x = 65,522,993.85

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Similar ratio
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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.