Finding the Fourth Proportional to 90,833.99, 136,207.24 and 31,668.35
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Solution
The fourth proportional to 90,833.99, 136,207.24 and 31,668.35 is: 47,487.27
Step by Step Solution
- Step 1: Write the proportion equation
90,833.99 : 136,207.24 = 31,668.35 : x - Step 2: Convert to fraction form
90,833.99/136,207.24 = 31,668.35/x - Step 3: Cross multiply
90,833.99x = 136,207.24 × 31,668.35 - Step 4: Simplify right side
90,833.99x = 4,313,458,548.85 - Step 5: Solve for x
x = 4,313,458,548.85/90,833.99 - Step 6: Final answer
x = 47,487.27
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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.