Finding the Fourth Proportional to 71,219.10, 106,905.45 and 40,115.10
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Solution
The fourth proportional to 71,219.10, 106,905.45 and 40,115.10 is: 60,215.91
Step by Step Solution
- Step 1: Write the proportion equation
71,219.10 : 106,905.45 = 40,115.10 : x - Step 2: Convert to fraction form
71,219.10/106,905.45 = 40,115.10/x - Step 3: Cross multiply
71,219.10x = 106,905.45 × 40,115.10 - Step 4: Simplify right side
71,219.10x = 4,288,522,817.30 - Step 5: Solve for x
x = 4,288,522,817.30/71,219.10 - Step 6: Final answer
x = 60,215.91
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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.