Finding the Fourth Proportional to 71,245.44, 106,863.84 and 18,653.76
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Solution
The fourth proportional to 71,245.44, 106,863.84 and 18,653.76 is: 27,979.51
Step by Step Solution
- Step 1: Write the proportion equation
71,245.44 : 106,863.84 = 18,653.76 : x - Step 2: Convert to fraction form
71,245.44/106,863.84 = 18,653.76/x - Step 3: Cross multiply
71,245.44x = 106,863.84 × 18,653.76 - Step 4: Simplify right side
71,245.44x = 1,993,412,424.04 - Step 5: Solve for x
x = 1,993,412,424.04/71,245.44 - Step 6: Final answer
x = 27,979.51
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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.