Finding the Fourth Proportional to 82,919.80, 124,379.70 and 27,515.80
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Solution
The fourth proportional to 82,919.80, 124,379.70 and 27,515.80 is: 41,273.70
Step by Step Solution
- Step 1: Write the proportion equation
82,919.80 : 124,379.70 = 27,515.80 : x - Step 2: Convert to fraction form
82,919.80/124,379.70 = 27,515.80/x - Step 3: Cross multiply
82,919.80x = 124,379.70 × 27,515.80 - Step 4: Simplify right side
82,919.80x = 3,422,406,949.26 - Step 5: Solve for x
x = 3,422,406,949.26/82,919.80 - Step 6: Final answer
x = 41,273.70
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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.