Finding the Fourth Proportional to 86,782.05, 130,147.56 and 36,861.75
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Solution
The fourth proportional to 86,782.05, 130,147.56 and 36,861.75 is: 55,281.79
Step by Step Solution
- Step 1: Write the proportion equation
86,782.05 : 130,147.56 = 36,861.75 : x - Step 2: Convert to fraction form
86,782.05/130,147.56 = 36,861.75/x - Step 3: Cross multiply
86,782.05x = 130,147.56 × 36,861.75 - Step 4: Simplify right side
86,782.05x = 4,797,466,819.83 - Step 5: Solve for x
x = 4,797,466,819.83/86,782.05 - Step 6: Final answer
x = 55,281.79
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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.