Finding the Fourth Proportional to 128,452.72, 192,727.68 and 49,571.68
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Solution
The fourth proportional to 128,452.72, 192,727.68 and 49,571.68 is: 74,376.28
Step by Step Solution
- Step 1: Write the proportion equation
128,452.72 : 192,727.68 = 49,571.68 : x - Step 2: Convert to fraction form
128,452.72/192,727.68 = 49,571.68/x - Step 3: Cross multiply
128,452.72x = 192,727.68 × 49,571.68 - Step 4: Simplify right side
128,452.72x = 9,553,834,880.10 - Step 5: Solve for x
x = 9,553,834,880.10/128,452.72 - Step 6: Final answer
x = 74,376.28
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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.