Finding the Fourth Proportional to 91,486.23, 137,195.21 and 31,497.75
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Solution
The fourth proportional to 91,486.23, 137,195.21 and 31,497.75 is: 47,234.88
Step by Step Solution
- Step 1: Write the proportion equation
91,486.23 : 137,195.21 = 31,497.75 : x - Step 2: Convert to fraction form
91,486.23/137,195.21 = 31,497.75/x - Step 3: Cross multiply
91,486.23x = 137,195.21 × 31,497.75 - Step 4: Simplify right side
91,486.23x = 4,321,341,057.97 - Step 5: Solve for x
x = 4,321,341,057.97/91,486.23 - Step 6: Final answer
x = 47,234.88
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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.