Finding the Fourth Proportional to 71,311.80, 106,967.70 and 36,319.80
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Solution
The fourth proportional to 71,311.80, 106,967.70 and 36,319.80 is: 54,479.70
Step by Step Solution
- Step 1: Write the proportion equation
71,311.80 : 106,967.70 = 36,319.80 : x - Step 2: Convert to fraction form
71,311.80/106,967.70 = 36,319.80/x - Step 3: Cross multiply
71,311.80x = 106,967.70 × 36,319.80 - Step 4: Simplify right side
71,311.80x = 3,885,045,470.46 - Step 5: Solve for x
x = 3,885,045,470.46/71,311.80 - Step 6: Final answer
x = 54,479.70
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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.