Finding the Third Proportional to 31,622 and 67,890
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Solution
The third proportional to 31,622 and 67,890 is: 145,754.60
Step by Step Solution
- Step 1: Write the proportion equation
31,622 : 67,890 = 67,890 : x - Step 2: Convert to fraction form
31,622/67,890 = 67,890/x - Step 3: Cross multiply
31,622x = 67,890 × 67,890 - Step 4: Simplify right side
31,622x = 4,609,052,100 - Step 5: Solve for x
x = 4,609,052,100/31,622 - Step 6: Final answer
x = 145,754.60
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Why These Related Problems?
These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.