Finding the Fourth Proportional to 87,691.05, 121,012.02 and 49,450.01
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Solution
The fourth proportional to 87,691.05, 121,012.02 and 49,450.01 is: 68,240.09
Step by Step Solution
- Step 1: Write the proportion equation
87,691.05 : 121,012.02 = 49,450.01 : x - Step 2: Convert to fraction form
87,691.05/121,012.02 = 49,450.01/x - Step 3: Cross multiply
87,691.05x = 121,012.02 × 49,450.01 - Step 4: Simplify right side
87,691.05x = 5,984,044,994.06 - Step 5: Solve for x
x = 5,984,044,994.06/87,691.05 - Step 6: Final answer
x = 68,240.09
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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.