Finding the Fourth Proportional to 87,388.80, 120,565.44 and 51,560.88
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Solution
The fourth proportional to 87,388.80, 120,565.44 and 51,560.88 is: 71,135.66
Step by Step Solution
- Step 1: Write the proportion equation
87,388.80 : 120,565.44 = 51,560.88 : x - Step 2: Convert to fraction form
87,388.80/120,565.44 = 51,560.88/x - Step 3: Cross multiply
87,388.80x = 120,565.44 × 51,560.88 - Step 4: Simplify right side
87,388.80x = 6,216,460,183.99 - Step 5: Solve for x
x = 6,216,460,183.99/87,388.80 - Step 6: Final answer
x = 71,135.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.