Finding the Fourth Proportional to 87,759.12, 131,590.02 and 40,986.48
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Solution
The fourth proportional to 87,759.12, 131,590.02 and 40,986.48 is: 61,456.99
Step by Step Solution
- Step 1: Write the proportion equation
87,759.12 : 131,590.02 = 40,986.48 : x - Step 2: Convert to fraction form
87,759.12/131,590.02 = 40,986.48/x - Step 3: Cross multiply
87,759.12x = 131,590.02 × 40,986.48 - Step 4: Simplify right side
87,759.12x = 5,393,411,722.93 - Step 5: Solve for x
x = 5,393,411,722.93/87,759.12 - Step 6: Final answer
x = 61,456.99
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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.