Finding the Fourth Proportional to 87,759.80, 131,653.35 and 28,581.70
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Solution
The fourth proportional to 87,759.80, 131,653.35 and 28,581.70 is: 42,876.99
Step by Step Solution
- Step 1: Write the proportion equation
87,759.80 : 131,653.35 = 28,581.70 : x - Step 2: Convert to fraction form
87,759.80/131,653.35 = 28,581.70/x - Step 3: Cross multiply
87,759.80x = 131,653.35 × 28,581.70 - Step 4: Simplify right side
87,759.80x = 3,762,875,895.43 - Step 5: Solve for x
x = 3,762,875,895.43/87,759.80 - Step 6: Final answer
x = 42,876.99
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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.