Finding the Fourth Proportional to 86,358.63, 129,542.57 and 27,198.91
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Solution
The fourth proportional to 86,358.63, 129,542.57 and 27,198.91 is: 40,799.82
Step by Step Solution
- Step 1: Write the proportion equation
86,358.63 : 129,542.57 = 27,198.91 : x - Step 2: Convert to fraction form
86,358.63/129,542.57 = 27,198.91/x - Step 3: Cross multiply
86,358.63x = 129,542.57 × 27,198.91 - Step 4: Simplify right side
86,358.63x = 3,523,416,702.60 - Step 5: Solve for x
x = 3,523,416,702.60/86,358.63 - Step 6: Final answer
x = 40,799.82
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1.5x scale
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.