Finding the Fourth Proportional to 76,711.05, 115,234.25 and 54,666.09
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Solution
The fourth proportional to 76,711.05, 115,234.25 and 54,666.09 is: 82,118.62
Step by Step Solution
- Step 1: Write the proportion equation
76,711.05 : 115,234.25 = 54,666.09 : x - Step 2: Convert to fraction form
76,711.05/115,234.25 = 54,666.09/x - Step 3: Cross multiply
76,711.05x = 115,234.25 × 54,666.09 - Step 4: Simplify right side
76,711.05x = 6,299,405,608.25 - Step 5: Solve for x
x = 6,299,405,608.25/76,711.05 - Step 6: Final answer
x = 82,118.62
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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.