Finding the Fourth Proportional to 71,077.67, 106,563.97 and 42,990.95
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Solution
The fourth proportional to 71,077.67, 106,563.97 and 42,990.95 is: 64,454.65
Step by Step Solution
- Step 1: Write the proportion equation
71,077.67 : 106,563.97 = 42,990.95 : x - Step 2: Convert to fraction form
71,077.67/106,563.97 = 42,990.95/x - Step 3: Cross multiply
71,077.67x = 106,563.97 × 42,990.95 - Step 4: Simplify right side
71,077.67x = 4,581,286,444.85 - Step 5: Solve for x
x = 4,581,286,444.85/71,077.67 - Step 6: Final answer
x = 64,454.65
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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.