Finding the Fourth Proportional to 82,720.34, 124,136.10 and 82,415.99
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Solution
The fourth proportional to 82,720.34, 124,136.10 and 82,415.99 is: 123,679.37
Step by Step Solution
- Step 1: Write the proportion equation
82,720.34 : 124,136.10 = 82,415.99 : x - Step 2: Convert to fraction form
82,720.34/124,136.10 = 82,415.99/x - Step 3: Cross multiply
82,720.34x = 124,136.10 × 82,415.99 - Step 4: Simplify right side
82,720.34x = 10,230,799,576.24 - Step 5: Solve for x
x = 10,230,799,576.24/82,720.34 - Step 6: Final answer
x = 123,679.37
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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.