Finding the Fourth Proportional to 81,190.03, 121,753.89 and 27,872.08
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Solution
The fourth proportional to 81,190.03, 121,753.89 and 27,872.08 is: 41,797.42
Step by Step Solution
- Step 1: Write the proportion equation
81,190.03 : 121,753.89 = 27,872.08 : x - Step 2: Convert to fraction form
81,190.03/121,753.89 = 27,872.08/x - Step 3: Cross multiply
81,190.03x = 121,753.89 × 27,872.08 - Step 4: Simplify right side
81,190.03x = 3,393,534,162.39 - Step 5: Solve for x
x = 3,393,534,162.39/81,190.03 - Step 6: Final answer
x = 41,797.42
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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.