Finding the Fourth Proportional to 82,115.49, 123,173.24 and 19,785.99
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Solution
The fourth proportional to 82,115.49, 123,173.24 and 19,785.99 is: 29,678.99
Step by Step Solution
- Step 1: Write the proportion equation
82,115.49 : 123,173.24 = 19,785.99 : x - Step 2: Convert to fraction form
82,115.49/123,173.24 = 19,785.99/x - Step 3: Cross multiply
82,115.49x = 123,173.24 × 19,785.99 - Step 4: Simplify right side
82,115.49x = 2,437,104,395.98 - Step 5: Solve for x
x = 2,437,104,395.98/82,115.49 - Step 6: Final answer
x = 29,678.99
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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.