Finding the Fourth Proportional to 82,305.09, 122,738.22 and 73,233.09
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Solution
The fourth proportional to 82,305.09, 122,738.22 and 73,233.09 is: 109,209.52
Step by Step Solution
- Step 1: Write the proportion equation
82,305.09 : 122,738.22 = 73,233.09 : x - Step 2: Convert to fraction form
82,305.09/122,738.22 = 73,233.09/x - Step 3: Cross multiply
82,305.09x = 122,738.22 × 73,233.09 - Step 4: Simplify right side
82,305.09x = 8,988,499,111.70 - Step 5: Solve for x
x = 8,988,499,111.70/82,305.09 - Step 6: Final answer
x = 109,209.52
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.