Home / 80,919,451.20-121,379,176.80-29,790,890.40

Finding the Fourth Proportional to 80,919,451.20, 121,379,176.80 and 29,790,890.40

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Solution

The fourth proportional to 80,919,451.20, 121,379,176.80 and 29,790,890.40 is: 44,686,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,451.20 : 121,379,176.80 = 29,790,890.40 : x
  2. Step 2: Convert to fraction form
    80,919,451.20/121,379,176.80 = 29,790,890.40/x
  3. Step 3: Cross multiply
    80,919,451.20x = 121,379,176.80 × 29,790,890.40
  4. Step 4: Simplify right side
    80,919,451.20x = 3,615,993,752,891,022.50
  5. Step 5: Solve for x
    x = 3,615,993,752,891,022.50/80,919,451.20
  6. Step 6: Final answer
    x = 44,686,335.60

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Double scale
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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.