Finding the Fourth Proportional to 71,431.92, 107,156.16 and 27,091.80
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Solution
The fourth proportional to 71,431.92, 107,156.16 and 27,091.80 is: 40,640.84
Step by Step Solution
- Step 1: Write the proportion equation
71,431.92 : 107,156.16 = 27,091.80 : x - Step 2: Convert to fraction form
71,431.92/107,156.16 = 27,091.80/x - Step 3: Cross multiply
71,431.92x = 107,156.16 × 27,091.80 - Step 4: Simplify right side
71,431.92x = 2,903,053,255.49 - Step 5: Solve for x
x = 2,903,053,255.49/71,431.92 - Step 6: Final answer
x = 40,640.84
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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.