Finding the Fourth Proportional to 80,876.24, 121,137.76 and 66,676.82
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Solution
The fourth proportional to 80,876.24, 121,137.76 and 66,676.82 is: 99,869.64
Step by Step Solution
- Step 1: Write the proportion equation
80,876.24 : 121,137.76 = 66,676.82 : x - Step 2: Convert to fraction form
80,876.24/121,137.76 = 66,676.82/x - Step 3: Cross multiply
80,876.24x = 121,137.76 × 66,676.82 - Step 4: Simplify right side
80,876.24x = 8,077,080,618.72 - Step 5: Solve for x
x = 8,077,080,618.72/80,876.24 - Step 6: Final answer
x = 99,869.64
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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.