Finding the Fourth Proportional to 82,378.68, 113,679.99 and 48,386.58
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Solution
The fourth proportional to 82,378.68, 113,679.99 and 48,386.58 is: 66,771.96
Step by Step Solution
- Step 1: Write the proportion equation
82,378.68 : 113,679.99 = 48,386.58 : x - Step 2: Convert to fraction form
82,378.68/113,679.99 = 48,386.58/x - Step 3: Cross multiply
82,378.68x = 113,679.99 × 48,386.58 - Step 4: Simplify right side
82,378.68x = 5,500,585,930.53 - Step 5: Solve for x
x = 5,500,585,930.53/82,378.68 - Step 6: Final answer
x = 66,771.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.