Finding the Fourth Proportional to 80,993.12, 121,489.16 and 27,659.37
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Solution
The fourth proportional to 80,993.12, 121,489.16 and 27,659.37 is: 41,488.88
Step by Step Solution
- Step 1: Write the proportion equation
80,993.12 : 121,489.16 = 27,659.37 : x - Step 2: Convert to fraction form
80,993.12/121,489.16 = 27,659.37/x - Step 3: Cross multiply
80,993.12x = 121,489.16 × 27,659.37 - Step 4: Simplify right side
80,993.12x = 3,360,313,489.13 - Step 5: Solve for x
x = 3,360,313,489.13/80,993.12 - Step 6: Final answer
x = 41,488.88
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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.