Finding the Fourth Proportional to 80,817.85, 121,226.78 and 30,902.99
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Solution
The fourth proportional to 80,817.85, 121,226.78 and 30,902.99 is: 46,354.49
Step by Step Solution
- Step 1: Write the proportion equation
80,817.85 : 121,226.78 = 30,902.99 : x - Step 2: Convert to fraction form
80,817.85/121,226.78 = 30,902.99/x - Step 3: Cross multiply
80,817.85x = 121,226.78 × 30,902.99 - Step 4: Simplify right side
80,817.85x = 3,746,270,290.22 - Step 5: Solve for x
x = 3,746,270,290.22/80,817.85 - Step 6: Final answer
x = 46,354.49
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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.