Finding the Fourth Proportional to 71,589.18, 107,324.64 and 31,579.65
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Solution
The fourth proportional to 71,589.18, 107,324.64 and 31,579.65 is: 47,343.39
Step by Step Solution
- Step 1: Write the proportion equation
71,589.18 : 107,324.64 = 31,579.65 : x - Step 2: Convert to fraction form
71,589.18/107,324.64 = 31,579.65/x - Step 3: Cross multiply
71,589.18x = 107,324.64 × 31,579.65 - Step 4: Simplify right side
71,589.18x = 3,389,274,567.58 - Step 5: Solve for x
x = 3,389,274,567.58/71,589.18 - Step 6: Final answer
x = 47,343.39
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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.