Finding the Fourth Proportional to 71,412.56, 107,183.08 and 38,161.05
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Solution
The fourth proportional to 71,412.56, 107,183.08 and 38,161.05 is: 57,275.90
Step by Step Solution
- Step 1: Write the proportion equation
71,412.56 : 107,183.08 = 38,161.05 : x - Step 2: Convert to fraction form
71,412.56/107,183.08 = 38,161.05/x - Step 3: Cross multiply
71,412.56x = 107,183.08 × 38,161.05 - Step 4: Simplify right side
71,412.56x = 4,090,218,520.80 - Step 5: Solve for x
x = 4,090,218,520.80/71,412.56 - Step 6: Final answer
x = 57,275.90
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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.