Finding the Fourth Proportional to 105,446.65, 145,516.22 and 57,699.99
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Solution
The fourth proportional to 105,446.65, 145,516.22 and 57,699.99 is: 79,625.90
Step by Step Solution
- Step 1: Write the proportion equation
105,446.65 : 145,516.22 = 57,699.99 : x - Step 2: Convert to fraction form
105,446.65/145,516.22 = 57,699.99/x - Step 3: Cross multiply
105,446.65x = 145,516.22 × 57,699.99 - Step 4: Simplify right side
105,446.65x = 8,396,284,438.84 - Step 5: Solve for x
x = 8,396,284,438.84/105,446.65 - Step 6: Final answer
x = 79,625.90
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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.