Finding the Fourth Proportional to 82,347.84, 122,919.12 and 70,735.68
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Solution
The fourth proportional to 82,347.84, 122,919.12 and 70,735.68 is: 105,585.86
Step by Step Solution
- Step 1: Write the proportion equation
82,347.84 : 122,919.12 = 70,735.68 : x - Step 2: Convert to fraction form
82,347.84/122,919.12 = 70,735.68/x - Step 3: Cross multiply
82,347.84x = 122,919.12 × 70,735.68 - Step 4: Simplify right side
82,347.84x = 8,694,767,538.20 - Step 5: Solve for x
x = 8,694,767,538.20/82,347.84 - Step 6: Final answer
x = 105,585.86
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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.