Finding the Fourth Proportional to 72,728.83, 100,367.04 and 40,465.99
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Solution
The fourth proportional to 72,728.83, 100,367.04 and 40,465.99 is: 55,843.76
Step by Step Solution
- Step 1: Write the proportion equation
72,728.83 : 100,367.04 = 40,465.99 : x - Step 2: Convert to fraction form
72,728.83/100,367.04 = 40,465.99/x - Step 3: Cross multiply
72,728.83x = 100,367.04 × 40,465.99 - Step 4: Simplify right side
72,728.83x = 4,061,451,636.97 - Step 5: Solve for x
x = 4,061,451,636.97/72,728.83 - Step 6: Final answer
x = 55,843.76
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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.