Finding the Fourth Proportional to 87,769.80, 131,668.36 and 28,591.70
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Solution
The fourth proportional to 87,769.80, 131,668.36 and 28,591.70 is: 42,891.99
Step by Step Solution
- Step 1: Write the proportion equation
87,769.80 : 131,668.36 = 28,591.70 : x - Step 2: Convert to fraction form
87,769.80/131,668.36 = 28,591.70/x - Step 3: Cross multiply
87,769.80x = 131,668.36 × 28,591.70 - Step 4: Simplify right side
87,769.80x = 3,764,621,518.79 - Step 5: Solve for x
x = 3,764,621,518.79/87,769.80 - Step 6: Final answer
x = 42,891.99
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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.