Finding the Fourth Proportional to 20,806,843.20, 31,212,233.10 and 5,660,774.70
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Solution
The fourth proportional to 20,806,843.20, 31,212,233.10 and 5,660,774.70 is: 8,491,697.55
Step by Step Solution
- Step 1: Write the proportion equation
20,806,843.20 : 31,212,233.10 = 5,660,774.70 : x - Step 2: Convert to fraction form
20,806,843.20/31,212,233.10 = 5,660,774.70/x - Step 3: Cross multiply
20,806,843.20x = 31,212,233.10 × 5,660,774.70 - Step 4: Simplify right side
20,806,843.20x = 176,685,419,462,982.59 - Step 5: Solve for x
x = 176,685,419,462,982.59/20,806,843.20 - Step 6: Final answer
x = 8,491,697.55
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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.