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Finding the Fourth Proportional to 80,045.59, 120,068.39 and 30,136.88

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Solution

The fourth proportional to 80,045.59, 120,068.39 and 30,136.88 is: 45,205.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,045.59 : 120,068.39 = 30,136.88 : x
  2. Step 2: Convert to fraction form
    80,045.59/120,068.39 = 30,136.88/x
  3. Step 3: Cross multiply
    80,045.59x = 120,068.39 × 30,136.88
  4. Step 4: Simplify right side
    80,045.59x = 3,618,486,998.47
  5. Step 5: Solve for x
    x = 3,618,486,998.47/80,045.59
  6. Step 6: Final answer
    x = 45,205.33

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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.