Finding the Fourth Proportional to 71,993.76, 107,976.06 and 19,390.95
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Solution
The fourth proportional to 71,993.76, 107,976.06 and 19,390.95 is: 29,082.50
Step by Step Solution
- Step 1: Write the proportion equation
71,993.76 : 107,976.06 = 19,390.95 : x - Step 2: Convert to fraction form
71,993.76/107,976.06 = 19,390.95/x - Step 3: Cross multiply
71,993.76x = 107,976.06 × 19,390.95 - Step 4: Simplify right side
71,993.76x = 2,093,758,380.66 - Step 5: Solve for x
x = 2,093,758,380.66/71,993.76 - Step 6: Final answer
x = 29,082.50
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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.