Finding the Fourth Proportional to 84,618.18, 126,935.70 and 31,324.41
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Solution
The fourth proportional to 84,618.18, 126,935.70 and 31,324.41 is: 46,989.74
Step by Step Solution
- Step 1: Write the proportion equation
84,618.18 : 126,935.70 = 31,324.41 : x - Step 2: Convert to fraction form
84,618.18/126,935.70 = 31,324.41/x - Step 3: Cross multiply
84,618.18x = 126,935.70 × 31,324.41 - Step 4: Simplify right side
84,618.18x = 3,976,185,910.44 - Step 5: Solve for x
x = 3,976,185,910.44/84,618.18 - Step 6: Final answer
x = 46,989.74
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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.