Finding the Fourth Proportional to 77,414.20, 116,100.20 and 21,240.99
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Solution
The fourth proportional to 77,414.20, 116,100.20 and 21,240.99 is: 31,855.70
Step by Step Solution
- Step 1: Write the proportion equation
77,414.20 : 116,100.20 = 21,240.99 : x - Step 2: Convert to fraction form
77,414.20/116,100.20 = 21,240.99/x - Step 3: Cross multiply
77,414.20x = 116,100.20 × 21,240.99 - Step 4: Simplify right side
77,414.20x = 2,466,083,240.30 - Step 5: Solve for x
x = 2,466,083,240.30/77,414.20 - Step 6: Final answer
x = 31,855.70
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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.