Finding the Fourth Proportional to 68,195.20, 102,307.20 and 20,806.40
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Solution
The fourth proportional to 68,195.20, 102,307.20 and 20,806.40 is: 31,213.99
Step by Step Solution
- Step 1: Write the proportion equation
68,195.20 : 102,307.20 = 20,806.40 : x - Step 2: Convert to fraction form
68,195.20/102,307.20 = 20,806.40/x - Step 3: Cross multiply
68,195.20x = 102,307.20 × 20,806.40 - Step 4: Simplify right side
68,195.20x = 2,128,644,526.08 - Step 5: Solve for x
x = 2,128,644,526.08/68,195.20 - Step 6: Final answer
x = 31,213.99
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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.