Finding the Fourth Proportional to 102,861.94, 141,942.78 and 57,532.07
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Solution
The fourth proportional to 102,861.94, 141,942.78 and 57,532.07 is: 79,390.51
Step by Step Solution
- Step 1: Write the proportion equation
102,861.94 : 141,942.78 = 57,532.07 : x - Step 2: Convert to fraction form
102,861.94/141,942.78 = 57,532.07/x - Step 3: Cross multiply
102,861.94x = 141,942.78 × 57,532.07 - Step 4: Simplify right side
102,861.94x = 8,166,261,245.24 - Step 5: Solve for x
x = 8,166,261,245.24/102,861.94 - Step 6: Final answer
x = 79,390.51
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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.