Finding the Fourth Proportional to 80,660.13, 120,964.28 and 26,612.65
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Solution
The fourth proportional to 80,660.13, 120,964.28 and 26,612.65 is: 39,910.43
Step by Step Solution
- Step 1: Write the proportion equation
80,660.13 : 120,964.28 = 26,612.65 : x - Step 2: Convert to fraction form
80,660.13/120,964.28 = 26,612.65/x - Step 3: Cross multiply
80,660.13x = 120,964.28 × 26,612.65 - Step 4: Simplify right side
80,660.13x = 3,219,180,046.14 - Step 5: Solve for x
x = 3,219,180,046.14/80,660.13 - Step 6: Final answer
x = 39,910.43
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1.5x scale
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.