Finding the Fourth Proportional to 73,130.85, 109,716.93 and 20,540.79
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Solution
The fourth proportional to 73,130.85, 109,716.93 and 20,540.79 is: 30,816.99
Step by Step Solution
- Step 1: Write the proportion equation
73,130.85 : 109,716.93 = 20,540.79 : x - Step 2: Convert to fraction form
73,130.85/109,716.93 = 20,540.79/x - Step 3: Cross multiply
73,130.85x = 109,716.93 × 20,540.79 - Step 4: Simplify right side
73,130.85x = 2,253,672,418.57 - Step 5: Solve for x
x = 2,253,672,418.57/73,130.85 - Step 6: Final answer
x = 30,816.99
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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.