Finding the Fourth Proportional to 97,861.73, 135,046.89 and 57,578.09
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Solution
The fourth proportional to 97,861.73, 135,046.89 and 57,578.09 is: 79,456.41
Step by Step Solution
- Step 1: Write the proportion equation
97,861.73 : 135,046.89 = 57,578.09 : x - Step 2: Convert to fraction form
97,861.73/135,046.89 = 57,578.09/x - Step 3: Cross multiply
97,861.73x = 135,046.89 × 57,578.09 - Step 4: Simplify right side
97,861.73x = 7,775,741,311.41 - Step 5: Solve for x
x = 7,775,741,311.41/97,861.73 - Step 6: Final answer
x = 79,456.41
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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.