Finding the Fourth Proportional to 7,992,136.20, 11,989,079.10 and 7,740,193.80
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Solution
The fourth proportional to 7,992,136.20, 11,989,079.10 and 7,740,193.80 is: 11,611,137.92
Step by Step Solution
- Step 1: Write the proportion equation
7,992,136.20 : 11,989,079.10 = 7,740,193.80 : x - Step 2: Convert to fraction form
7,992,136.20/11,989,079.10 = 7,740,193.80/x - Step 3: Cross multiply
7,992,136.20x = 11,989,079.10 × 7,740,193.80 - Step 4: Simplify right side
7,992,136.20x = 92,797,795,717,529.58 - Step 5: Solve for x
x = 92,797,795,717,529.58/7,992,136.20 - Step 6: Final answer
x = 11,611,137.92
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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.