Finding the Fourth Proportional to 68,557.20, 102,874.20 and 29,107.60
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Solution
The fourth proportional to 68,557.20, 102,874.20 and 29,107.60 is: 43,677.70
Step by Step Solution
- Step 1: Write the proportion equation
68,557.20 : 102,874.20 = 29,107.60 : x - Step 2: Convert to fraction form
68,557.20/102,874.20 = 29,107.60/x - Step 3: Cross multiply
68,557.20x = 102,874.20 × 29,107.60 - Step 4: Simplify right side
68,557.20x = 2,994,421,063.92 - Step 5: Solve for x
x = 2,994,421,063.92/68,557.20 - Step 6: Final answer
x = 43,677.70
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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.