Finding the Fourth Proportional to 87,138.20, 130,704.60 and 24,808.70
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Solution
The fourth proportional to 87,138.20, 130,704.60 and 24,808.70 is: 37,212.28
Step by Step Solution
- Step 1: Write the proportion equation
87,138.20 : 130,704.60 = 24,808.70 : x - Step 2: Convert to fraction form
87,138.20/130,704.60 = 24,808.70/x - Step 3: Cross multiply
87,138.20x = 130,704.60 × 24,808.70 - Step 4: Simplify right side
87,138.20x = 3,242,611,210.02 - Step 5: Solve for x
x = 3,242,611,210.02/87,138.20 - Step 6: Final answer
x = 37,212.28
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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.