Finding the Fourth Proportional to 87,344.97, 130,985.22 and 31,170.05
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Solution
The fourth proportional to 87,344.97, 130,985.22 and 31,170.05 is: 46,743.58
Step by Step Solution
- Step 1: Write the proportion equation
87,344.97 : 130,985.22 = 31,170.05 : x - Step 2: Convert to fraction form
87,344.97/130,985.22 = 31,170.05/x - Step 3: Cross multiply
87,344.97x = 130,985.22 × 31,170.05 - Step 4: Simplify right side
87,344.97x = 4,082,816,301.01 - Step 5: Solve for x
x = 4,082,816,301.01/87,344.97 - Step 6: Final answer
x = 46,743.58
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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.