Finding the Fourth Proportional to 87,485.13, 120,699.32 and 49,236.93
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Solution
The fourth proportional to 87,485.13, 120,699.32 and 49,236.93 is: 67,929.99
Step by Step Solution
- Step 1: Write the proportion equation
87,485.13 : 120,699.32 = 49,236.93 : x - Step 2: Convert to fraction form
87,485.13/120,699.32 = 49,236.93/x - Step 3: Cross multiply
87,485.13x = 120,699.32 × 49,236.93 - Step 4: Simplify right side
87,485.13x = 5,942,863,723.70 - Step 5: Solve for x
x = 5,942,863,723.70/87,485.13 - Step 6: Final answer
x = 67,929.99
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1.5x scale
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.