Finding the Fourth Proportional to 86,162.49, 129,243.79 and 27,002.79
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Solution
The fourth proportional to 86,162.49, 129,243.79 and 27,002.79 is: 40,504.20
Step by Step Solution
- Step 1: Write the proportion equation
86,162.49 : 129,243.79 = 27,002.79 : x - Step 2: Convert to fraction form
86,162.49/129,243.79 = 27,002.79/x - Step 3: Cross multiply
86,162.49x = 129,243.79 × 27,002.79 - Step 4: Simplify right side
86,162.49x = 3,489,942,920.17 - Step 5: Solve for x
x = 3,489,942,920.17/86,162.49 - Step 6: Final answer
x = 40,504.20
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Half scale
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Double scale
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Similar ratio
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1.5x scale
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.