Finding the Fourth Proportional to 87,998.15, 121,438.34 and 47,711.99
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Solution
The fourth proportional to 87,998.15, 121,438.34 and 47,711.99 is: 65,843.03
Step by Step Solution
- Step 1: Write the proportion equation
87,998.15 : 121,438.34 = 47,711.99 : x - Step 2: Convert to fraction form
87,998.15/121,438.34 = 47,711.99/x - Step 3: Cross multiply
87,998.15x = 121,438.34 × 47,711.99 - Step 4: Simplify right side
87,998.15x = 5,794,064,375.78 - Step 5: Solve for x
x = 5,794,064,375.78/87,998.15 - Step 6: Final answer
x = 65,843.03
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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.