Finding the Fourth Proportional to 68,128.22, 102,207.70 and 20,747.54
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Solution
The fourth proportional to 68,128.22, 102,207.70 and 20,747.54 is: 31,125.99
Step by Step Solution
- Step 1: Write the proportion equation
68,128.22 : 102,207.70 = 20,747.54 : x - Step 2: Convert to fraction form
68,128.22/102,207.70 = 20,747.54/x - Step 3: Cross multiply
68,128.22x = 102,207.70 × 20,747.54 - Step 4: Simplify right side
68,128.22x = 2,120,558,344.06 - Step 5: Solve for x
x = 2,120,558,344.06/68,128.22 - Step 6: Final answer
x = 31,125.99
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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.