Finding the Fourth Proportional to 87,628.80, 131,248.80 and 75,964.80
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Solution
The fourth proportional to 87,628.80, 131,248.80 and 75,964.80 is: 113,778.68
Step by Step Solution
- Step 1: Write the proportion equation
87,628.80 : 131,248.80 = 75,964.80 : x - Step 2: Convert to fraction form
87,628.80/131,248.80 = 75,964.80/x - Step 3: Cross multiply
87,628.80x = 131,248.80 × 75,964.80 - Step 4: Simplify right side
87,628.80x = 9,970,288,842.24 - Step 5: Solve for x
x = 9,970,288,842.24/87,628.80 - Step 6: Final answer
x = 113,778.68
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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.