Finding the Fourth Proportional to 87,191.39, 130,786.17 and 57,740.99
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Solution
The fourth proportional to 87,191.39, 130,786.17 and 57,740.99 is: 86,610.88
Step by Step Solution
- Step 1: Write the proportion equation
87,191.39 : 130,786.17 = 57,740.99 : x - Step 2: Convert to fraction form
87,191.39/130,786.17 = 57,740.99/x - Step 3: Cross multiply
87,191.39x = 130,786.17 × 57,740.99 - Step 4: Simplify right side
87,191.39x = 7,551,722,934.11 - Step 5: Solve for x
x = 7,551,722,934.11/87,191.39 - Step 6: Final answer
x = 86,610.88
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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.