Finding the Fourth Proportional to 84,609.36, 126,855.72 and 40,198.68
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Solution
The fourth proportional to 84,609.36, 126,855.72 and 40,198.68 is: 60,270.31
Step by Step Solution
- Step 1: Write the proportion equation
84,609.36 : 126,855.72 = 40,198.68 : x - Step 2: Convert to fraction form
84,609.36/126,855.72 = 40,198.68/x - Step 3: Cross multiply
84,609.36x = 126,855.72 × 40,198.68 - Step 4: Simplify right side
84,609.36x = 5,099,432,494.45 - Step 5: Solve for x
x = 5,099,432,494.45/84,609.36 - Step 6: Final answer
x = 60,270.31
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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.