Finding the Fourth Proportional to 75,678.06, 113,523.60 and 19,517.66
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Solution
The fourth proportional to 75,678.06, 113,523.60 and 19,517.66 is: 29,278.17
Step by Step Solution
- Step 1: Write the proportion equation
75,678.06 : 113,523.60 = 19,517.66 : x - Step 2: Convert to fraction form
75,678.06/113,523.60 = 19,517.66/x - Step 3: Cross multiply
75,678.06x = 113,523.60 × 19,517.66 - Step 4: Simplify right side
75,678.06x = 2,215,715,026.78 - Step 5: Solve for x
x = 2,215,715,026.78/75,678.06 - Step 6: Final answer
x = 29,278.17
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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.