Finding the Fourth Proportional to 76,781.75, 115,198.88 and 46,855.98
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Solution
The fourth proportional to 76,781.75, 115,198.88 and 46,855.98 is: 70,299.99
Step by Step Solution
- Step 1: Write the proportion equation
76,781.75 : 115,198.88 = 46,855.98 : x - Step 2: Convert to fraction form
76,781.75/115,198.88 = 46,855.98/x - Step 3: Cross multiply
76,781.75x = 115,198.88 × 46,855.98 - Step 4: Simplify right side
76,781.75x = 5,397,756,183.02 - Step 5: Solve for x
x = 5,397,756,183.02/76,781.75 - Step 6: Final answer
x = 70,299.99
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1.5x scale
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.