Finding the Fourth Proportional to 87,438.06, 131,142.98 and 31,268.62
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Solution
The fourth proportional to 87,438.06, 131,142.98 and 31,268.62 is: 46,897.88
Step by Step Solution
- Step 1: Write the proportion equation
87,438.06 : 131,142.98 = 31,268.62 : x - Step 2: Convert to fraction form
87,438.06/131,142.98 = 31,268.62/x - Step 3: Cross multiply
87,438.06x = 131,142.98 × 31,268.62 - Step 4: Simplify right side
87,438.06x = 4,100,660,007.29 - Step 5: Solve for x
x = 4,100,660,007.29/87,438.06 - Step 6: Final answer
x = 46,897.88
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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.