Finding the Fourth Proportional to 71,394.20, 107,091.30 and 68,113.70
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Solution
The fourth proportional to 71,394.20, 107,091.30 and 68,113.70 is: 102,170.55
Step by Step Solution
- Step 1: Write the proportion equation
71,394.20 : 107,091.30 = 68,113.70 : x - Step 2: Convert to fraction form
71,394.20/107,091.30 = 68,113.70/x - Step 3: Cross multiply
71,394.20x = 107,091.30 × 68,113.70 - Step 4: Simplify right side
71,394.20x = 7,294,384,680.81 - Step 5: Solve for x
x = 7,294,384,680.81/71,394.20 - Step 6: Final answer
x = 102,170.55
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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.