Finding the Fourth Proportional to 102,861.56, 141,942.26 and 57,531.69
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Solution
The fourth proportional to 102,861.56, 141,942.26 and 57,531.69 is: 79,389.99
Step by Step Solution
- Step 1: Write the proportion equation
102,861.56 : 141,942.26 = 57,531.69 : x - Step 2: Convert to fraction form
102,861.56/141,942.26 = 57,531.69/x - Step 3: Cross multiply
102,861.56x = 141,942.26 × 57,531.69 - Step 4: Simplify right side
102,861.56x = 8,166,178,244.05 - Step 5: Solve for x
x = 8,166,178,244.05/102,861.56 - Step 6: Final answer
x = 79,389.99
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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.