Finding the Fourth Proportional to 86,738.20, 130,107.30 and 44,747.80
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Solution
The fourth proportional to 86,738.20, 130,107.30 and 44,747.80 is: 67,121.70
Step by Step Solution
- Step 1: Write the proportion equation
86,738.20 : 130,107.30 = 44,747.80 : x - Step 2: Convert to fraction form
86,738.20/130,107.30 = 44,747.80/x - Step 3: Cross multiply
86,738.20x = 130,107.30 × 44,747.80 - Step 4: Simplify right side
86,738.20x = 5,822,015,438.94 - Step 5: Solve for x
x = 5,822,015,438.94/86,738.20 - Step 6: Final answer
x = 67,121.70
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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.