Finding the Fourth Proportional to 83,431.22, 125,145.74 and 20,251.84
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Solution
The fourth proportional to 83,431.22, 125,145.74 and 20,251.84 is: 30,377.50
Step by Step Solution
- Step 1: Write the proportion equation
83,431.22 : 125,145.74 = 20,251.84 : x - Step 2: Convert to fraction form
83,431.22/125,145.74 = 20,251.84/x - Step 3: Cross multiply
83,431.22x = 125,145.74 × 20,251.84 - Step 4: Simplify right side
83,431.22x = 2,534,431,503.16 - Step 5: Solve for x
x = 2,534,431,503.16/83,431.22 - Step 6: Final answer
x = 30,377.50
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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.