Finding the Fourth Proportional to 90,546.12, 135,819.86 and 34,371.09
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Solution
The fourth proportional to 90,546.12, 135,819.86 and 34,371.09 is: 51,556.89
Step by Step Solution
- Step 1: Write the proportion equation
90,546.12 : 135,819.86 = 34,371.09 : x - Step 2: Convert to fraction form
90,546.12/135,819.86 = 34,371.09/x - Step 3: Cross multiply
90,546.12x = 135,819.86 × 34,371.09 - Step 4: Simplify right side
90,546.12x = 4,668,276,631.85 - Step 5: Solve for x
x = 4,668,276,631.85/90,546.12 - Step 6: Final answer
x = 51,556.89
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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.