Finding the Fourth Proportional to 111,921.08, 154,452.86 and 61,620.08
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Solution
The fourth proportional to 111,921.08, 154,452.86 and 61,620.08 is: 85,036.68
Step by Step Solution
- Step 1: Write the proportion equation
111,921.08 : 154,452.86 = 61,620.08 : x - Step 2: Convert to fraction form
111,921.08/154,452.86 = 61,620.08/x - Step 3: Cross multiply
111,921.08x = 154,452.86 × 61,620.08 - Step 4: Simplify right side
111,921.08x = 9,517,397,589.43 - Step 5: Solve for x
x = 9,517,397,589.43/111,921.08 - Step 6: Final answer
x = 85,036.68
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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.