Finding the Fourth Proportional to 87,744.98, 120,978.15 and 73,229.99
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Solution
The fourth proportional to 87,744.98, 120,978.15 and 73,229.99 is: 100,965.65
Step by Step Solution
- Step 1: Write the proportion equation
87,744.98 : 120,978.15 = 73,229.99 : x - Step 2: Convert to fraction form
87,744.98/120,978.15 = 73,229.99/x - Step 3: Cross multiply
87,744.98x = 120,978.15 × 73,229.99 - Step 4: Simplify right side
87,744.98x = 8,859,228,109.83 - Step 5: Solve for x
x = 8,859,228,109.83/87,744.98 - Step 6: Final answer
x = 100,965.65
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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.