Finding the Fourth Proportional to 80,874.75, 111,605.64 and 45,063.99
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Solution
The fourth proportional to 80,874.75, 111,605.64 and 45,063.99 is: 62,187.47
Step by Step Solution
- Step 1: Write the proportion equation
80,874.75 : 111,605.64 = 45,063.99 : x - Step 2: Convert to fraction form
80,874.75/111,605.64 = 45,063.99/x - Step 3: Cross multiply
80,874.75x = 111,605.64 × 45,063.99 - Step 4: Simplify right side
80,874.75x = 5,029,395,723.92 - Step 5: Solve for x
x = 5,029,395,723.92/80,874.75 - Step 6: Final answer
x = 62,187.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.