Finding the Fourth Proportional to 72,517.84, 108,809.40 and 39,198.90
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Solution
The fourth proportional to 72,517.84, 108,809.40 and 39,198.90 is: 58,815.99
Step by Step Solution
- Step 1: Write the proportion equation
72,517.84 : 108,809.40 = 39,198.90 : x - Step 2: Convert to fraction form
72,517.84/108,809.40 = 39,198.90/x - Step 3: Cross multiply
72,517.84x = 108,809.40 × 39,198.90 - Step 4: Simplify right side
72,517.84x = 4,265,208,775.40 - Step 5: Solve for x
x = 4,265,208,775.40/72,517.84 - Step 6: Final answer
x = 58,815.99
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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.