Finding the Fourth Proportional to 80,958.76, 121,408.99 and 34,215.28
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Solution
The fourth proportional to 80,958.76, 121,408.99 and 34,215.28 is: 51,310.60
Step by Step Solution
- Step 1: Write the proportion equation
80,958.76 : 121,408.99 = 34,215.28 : x - Step 2: Convert to fraction form
80,958.76/121,408.99 = 34,215.28/x - Step 3: Cross multiply
80,958.76x = 121,408.99 × 34,215.28 - Step 4: Simplify right side
80,958.76x = 4,154,042,198.31 - Step 5: Solve for x
x = 4,154,042,198.31/80,958.76 - Step 6: Final answer
x = 51,310.60
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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.