Finding the Fourth Proportional to 90,121.97, 124,369.12 and 49,838.44
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Solution
The fourth proportional to 90,121.97, 124,369.12 and 49,838.44 is: 68,777.49
Step by Step Solution
- Step 1: Write the proportion equation
90,121.97 : 124,369.12 = 49,838.44 : x - Step 2: Convert to fraction form
90,121.97/124,369.12 = 49,838.44/x - Step 3: Cross multiply
90,121.97x = 124,369.12 × 49,838.44 - Step 4: Simplify right side
90,121.97x = 6,198,362,924.97 - Step 5: Solve for x
x = 6,198,362,924.97/90,121.97 - Step 6: Final answer
x = 68,777.49
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.