Home / 80,532,003.70-120,798,005.55-40,221,219.70

Finding the Fourth Proportional to 80,532,003.70, 120,798,005.55 and 40,221,219.70

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Solution

The fourth proportional to 80,532,003.70, 120,798,005.55 and 40,221,219.70 is: 60,331,829.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,532,003.70 : 120,798,005.55 = 40,221,219.70 : x
  2. Step 2: Convert to fraction form
    80,532,003.70/120,798,005.55 = 40,221,219.70/x
  3. Step 3: Cross multiply
    80,532,003.70x = 120,798,005.55 × 40,221,219.70
  4. Step 4: Simplify right side
    80,532,003.70x = 4,858,643,120,548,370
  5. Step 5: Solve for x
    x = 4,858,643,120,548,370/80,532,003.70
  6. Step 6: Final answer
    x = 60,331,829.55

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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.