Finding the Fourth Proportional to 83,911.68, 125,868.60 and 31,310.28
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Solution
The fourth proportional to 83,911.68, 125,868.60 and 31,310.28 is: 46,965.82
Step by Step Solution
- Step 1: Write the proportion equation
83,911.68 : 125,868.60 = 31,310.28 : x - Step 2: Convert to fraction form
83,911.68/125,868.60 = 31,310.28/x - Step 3: Cross multiply
83,911.68x = 125,868.60 × 31,310.28 - Step 4: Simplify right side
83,911.68x = 3,940,981,109.21 - Step 5: Solve for x
x = 3,940,981,109.21/83,911.68 - Step 6: Final answer
x = 46,965.82
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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.