Finding the Fourth Proportional to 82,721,253.20, 124,081,879.80 and 22,136,979.20
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Solution
The fourth proportional to 82,721,253.20, 124,081,879.80 and 22,136,979.20 is: 33,205,468.80
Step by Step Solution
- Step 1: Write the proportion equation
82,721,253.20 : 124,081,879.80 = 22,136,979.20 : x - Step 2: Convert to fraction form
82,721,253.20/124,081,879.80 = 22,136,979.20/x - Step 3: Cross multiply
82,721,253.20x = 124,081,879.80 × 22,136,979.20 - Step 4: Simplify right side
82,721,253.20x = 2,746,797,992,229,500 - Step 5: Solve for x
x = 2,746,797,992,229,500/82,721,253.20 - Step 6: Final answer
x = 33,205,468.80
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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.