Finding the Fourth Proportional to 128,572.44, 192,876.90 and 39,832.92
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Solution
The fourth proportional to 128,572.44, 192,876.90 and 39,832.92 is: 59,755.03
Step by Step Solution
- Step 1: Write the proportion equation
128,572.44 : 192,876.90 = 39,832.92 : x - Step 2: Convert to fraction form
128,572.44/192,876.90 = 39,832.92/x - Step 3: Cross multiply
128,572.44x = 192,876.90 × 39,832.92 - Step 4: Simplify right side
128,572.44x = 7,682,850,127.55 - Step 5: Solve for x
x = 7,682,850,127.55/128,572.44 - Step 6: Final answer
x = 59,755.03
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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.