Finding the Fourth Proportional to 82,010.79, 122,938.43 and 40,409.19
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Solution
The fourth proportional to 82,010.79, 122,938.43 and 40,409.19 is: 60,575.47
Step by Step Solution
- Step 1: Write the proportion equation
82,010.79 : 122,938.43 = 40,409.19 : x - Step 2: Convert to fraction form
82,010.79/122,938.43 = 40,409.19/x - Step 3: Cross multiply
82,010.79x = 122,938.43 × 40,409.19 - Step 4: Simplify right side
82,010.79x = 4,967,842,174.13 - Step 5: Solve for x
x = 4,967,842,174.13/82,010.79 - Step 6: Final answer
x = 60,575.47
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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.