Finding the Fourth Proportional to 82,966.18, 124,449.02 and 20,636.68
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Solution
The fourth proportional to 82,966.18, 124,449.02 and 20,636.68 is: 30,954.95
Step by Step Solution
- Step 1: Write the proportion equation
82,966.18 : 124,449.02 = 20,636.68 : x - Step 2: Convert to fraction form
82,966.18/124,449.02 = 20,636.68/x - Step 3: Cross multiply
82,966.18x = 124,449.02 × 20,636.68 - Step 4: Simplify right side
82,966.18x = 2,568,213,979.81 - Step 5: Solve for x
x = 2,568,213,979.81/82,966.18 - Step 6: Final answer
x = 30,954.95
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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.