Finding the Fourth Proportional to 87,589.62, 120,922.11 and 53,606.70
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Solution
The fourth proportional to 87,589.62, 120,922.11 and 53,606.70 is: 74,006.89
Step by Step Solution
- Step 1: Write the proportion equation
87,589.62 : 120,922.11 = 53,606.70 : x - Step 2: Convert to fraction form
87,589.62/120,922.11 = 53,606.70/x - Step 3: Cross multiply
87,589.62x = 120,922.11 × 53,606.70 - Step 4: Simplify right side
87,589.62x = 6,482,235,274.14 - Step 5: Solve for x
x = 6,482,235,274.14/87,589.62 - Step 6: Final answer
x = 74,006.89
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.