Finding the Fourth Proportional to 75,616.75, 104,351.12 and 42,082.75
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Solution
The fourth proportional to 75,616.75, 104,351.12 and 42,082.75 is: 58,074.20
Step by Step Solution
- Step 1: Write the proportion equation
75,616.75 : 104,351.12 = 42,082.75 : x - Step 2: Convert to fraction form
75,616.75/104,351.12 = 42,082.75/x - Step 3: Cross multiply
75,616.75x = 104,351.12 × 42,082.75 - Step 4: Simplify right side
75,616.75x = 4,391,382,095.18 - Step 5: Solve for x
x = 4,391,382,095.18/75,616.75 - Step 6: Final answer
x = 58,074.20
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1.5x scale
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.