Finding the Fourth Proportional to 100,082.10, 138,110.46 and 54,759.09
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Solution
The fourth proportional to 100,082.10, 138,110.46 and 54,759.09 is: 75,565.99
Step by Step Solution
- Step 1: Write the proportion equation
100,082.10 : 138,110.46 = 54,759.09 : x - Step 2: Convert to fraction form
100,082.10/138,110.46 = 54,759.09/x - Step 3: Cross multiply
100,082.10x = 138,110.46 × 54,759.09 - Step 4: Simplify right side
100,082.10x = 7,562,803,109.08 - Step 5: Solve for x
x = 7,562,803,109.08/100,082.10 - Step 6: Final answer
x = 75,565.99
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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.