Finding the Fourth Proportional to 72,830.50, 109,251.68 and 20,239.99
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Solution
The fourth proportional to 72,830.50, 109,251.68 and 20,239.99 is: 30,361.63
Step by Step Solution
- Step 1: Write the proportion equation
72,830.50 : 109,251.68 = 20,239.99 : x - Step 2: Convert to fraction form
72,830.50/109,251.68 = 20,239.99/x - Step 3: Cross multiply
72,830.50x = 109,251.68 × 20,239.99 - Step 4: Simplify right side
72,830.50x = 2,211,252,910.68 - Step 5: Solve for x
x = 2,211,252,910.68/72,830.50 - Step 6: Final answer
x = 30,361.63
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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.