Finding the Fourth Proportional to 87,205.26, 120,324.62 and 51,382.20
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Solution
The fourth proportional to 87,205.26, 120,324.62 and 51,382.20 is: 70,896.45
Step by Step Solution
- Step 1: Write the proportion equation
87,205.26 : 120,324.62 = 51,382.20 : x - Step 2: Convert to fraction form
87,205.26/120,324.62 = 51,382.20/x - Step 3: Cross multiply
87,205.26x = 120,324.62 × 51,382.20 - Step 4: Simplify right side
87,205.26x = 6,182,543,689.76 - Step 5: Solve for x
x = 6,182,543,689.76/87,205.26 - Step 6: Final answer
x = 70,896.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.