Finding the Fourth Proportional to 69,311.76, 103,978.85 and 27,168.99
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Solution
The fourth proportional to 69,311.76, 103,978.85 and 27,168.99 is: 40,757.88
Step by Step Solution
- Step 1: Write the proportion equation
69,311.76 : 103,978.85 = 27,168.99 : x - Step 2: Convert to fraction form
69,311.76/103,978.85 = 27,168.99/x - Step 3: Cross multiply
69,311.76x = 103,978.85 × 27,168.99 - Step 4: Simplify right side
69,311.76x = 2,825,000,335.86 - Step 5: Solve for x
x = 2,825,000,335.86/69,311.76 - Step 6: Final answer
x = 40,757.88
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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.