Finding the Fourth Proportional to 71,469.92, 107,213.20 and 27,129.84
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Solution
The fourth proportional to 71,469.92, 107,213.20 and 27,129.84 is: 40,697.92
Step by Step Solution
- Step 1: Write the proportion equation
71,469.92 : 107,213.20 = 27,129.84 : x - Step 2: Convert to fraction form
71,469.92/107,213.20 = 27,129.84/x - Step 3: Cross multiply
71,469.92x = 107,213.20 × 27,129.84 - Step 4: Simplify right side
71,469.92x = 2,908,676,961.89 - Step 5: Solve for x
x = 2,908,676,961.89/71,469.92 - Step 6: Final answer
x = 40,697.92
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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.