Finding the Fourth Proportional to 84,285.21, 126,446.28 and 31,694.70
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Solution
The fourth proportional to 84,285.21, 126,446.28 and 31,694.70 is: 47,548.99
Step by Step Solution
- Step 1: Write the proportion equation
84,285.21 : 126,446.28 = 31,694.70 : x - Step 2: Convert to fraction form
84,285.21/126,446.28 = 31,694.70/x - Step 3: Cross multiply
84,285.21x = 126,446.28 × 31,694.70 - Step 4: Simplify right side
84,285.21x = 4,007,676,910.72 - Step 5: Solve for x
x = 4,007,676,910.72/84,285.21 - Step 6: Final answer
x = 47,548.99
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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.