Finding the Fourth Proportional to 86,660.80, 129,990.85 and 27,501.08
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Solution
The fourth proportional to 86,660.80, 129,990.85 and 27,501.08 is: 41,251.50
Step by Step Solution
- Step 1: Write the proportion equation
86,660.80 : 129,990.85 = 27,501.08 : x - Step 2: Convert to fraction form
86,660.80/129,990.85 = 27,501.08/x - Step 3: Cross multiply
86,660.80x = 129,990.85 × 27,501.08 - Step 4: Simplify right side
86,660.80x = 3,574,888,046.41 - Step 5: Solve for x
x = 3,574,888,046.41/86,660.80 - Step 6: Final answer
x = 41,251.50
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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.