Finding the Third Proportional to 38,940 and 81,768
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Solution
The third proportional to 38,940 and 81,768 is: 171,700.20
Step by Step Solution
- Step 1: Write the proportion equation
38,940 : 81,768 = 81,768 : x - Step 2: Convert to fraction form
38,940/81,768 = 81,768/x - Step 3: Cross multiply
38,940x = 81,768 × 81,768 - Step 4: Simplify right side
38,940x = 6,686,005,824 - Step 5: Solve for x
x = 6,686,005,824/38,940 - Step 6: Final answer
x = 171,700.20
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Why These Related Problems?
These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.