Finding the Fourth Proportional to 128,578.38, 192,749.45 and 44,318.54
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Solution
The fourth proportional to 128,578.38, 192,749.45 and 44,318.54 is: 66,437.09
Step by Step Solution
- Step 1: Write the proportion equation
128,578.38 : 192,749.45 = 44,318.54 : x - Step 2: Convert to fraction form
128,578.38/192,749.45 = 44,318.54/x - Step 3: Cross multiply
128,578.38x = 192,749.45 × 44,318.54 - Step 4: Simplify right side
128,578.38x = 8,542,373,024.46 - Step 5: Solve for x
x = 8,542,373,024.46/128,578.38 - Step 6: Final answer
x = 66,437.09
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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.