Finding the Fourth Proportional to 84,830.20, 127,391.10 and 82,205.80
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Solution
The fourth proportional to 84,830.20, 127,391.10 and 82,205.80 is: 123,449.99
Step by Step Solution
- Step 1: Write the proportion equation
84,830.20 : 127,391.10 = 82,205.80 : x - Step 2: Convert to fraction form
84,830.20/127,391.10 = 82,205.80/x - Step 3: Cross multiply
84,830.20x = 127,391.10 × 82,205.80 - Step 4: Simplify right side
84,830.20x = 10,472,287,288.38 - Step 5: Solve for x
x = 10,472,287,288.38/84,830.20 - Step 6: Final answer
x = 123,449.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.