Finding the Fourth Proportional to 128,571.42, 192,869.81 and 44,320.49
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Solution
The fourth proportional to 128,571.42, 192,869.81 and 44,320.49 is: 66,485.11
Step by Step Solution
- Step 1: Write the proportion equation
128,571.42 : 192,869.81 = 44,320.49 : x - Step 2: Convert to fraction form
128,571.42/192,869.81 = 44,320.49/x - Step 3: Cross multiply
128,571.42x = 192,869.81 × 44,320.49 - Step 4: Simplify right side
128,571.42x = 8,548,084,485.41 - Step 5: Solve for x
x = 8,548,084,485.41/128,571.42 - Step 6: Final answer
x = 66,485.11
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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.