Finding the Fourth Proportional to 87,906.96, 131,858.62 and 21,347.44
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Solution
The fourth proportional to 87,906.96, 131,858.62 and 21,347.44 is: 32,020.72
Step by Step Solution
- Step 1: Write the proportion equation
87,906.96 : 131,858.62 = 21,347.44 : x - Step 2: Convert to fraction form
87,906.96/131,858.62 = 21,347.44/x - Step 3: Cross multiply
87,906.96x = 131,858.62 × 21,347.44 - Step 4: Simplify right side
87,906.96x = 2,814,843,978.93 - Step 5: Solve for x
x = 2,814,843,978.93/87,906.96 - Step 6: Final answer
x = 32,020.72
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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.