Finding the Fourth Proportional to 82,785,207.40, 124,177,811.10 and 81,441,514.60
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Solution
The fourth proportional to 82,785,207.40, 124,177,811.10 and 81,441,514.60 is: 122,162,271.90
Step by Step Solution
- Step 1: Write the proportion equation
82,785,207.40 : 124,177,811.10 = 81,441,514.60 : x - Step 2: Convert to fraction form
82,785,207.40/124,177,811.10 = 81,441,514.60/x - Step 3: Cross multiply
82,785,207.40x = 124,177,811.10 × 81,441,514.60 - Step 4: Simplify right side
82,785,207.40x = 10,113,229,015,696,690 - Step 5: Solve for x
x = 10,113,229,015,696,690/82,785,207.40 - Step 6: Final answer
x = 122,162,271.90
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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.