Finding the Fourth Proportional to 87,580.38, 120,869.84 and 53,611.31
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Solution
The fourth proportional to 87,580.38, 120,869.84 and 53,611.31 is: 73,989.07
Step by Step Solution
- Step 1: Write the proportion equation
87,580.38 : 120,869.84 = 53,611.31 : x - Step 2: Convert to fraction form
87,580.38/120,869.84 = 53,611.31/x - Step 3: Cross multiply
87,580.38x = 120,869.84 × 53,611.31 - Step 4: Simplify right side
87,580.38x = 6,479,990,444.83 - Step 5: Solve for x
x = 6,479,990,444.83/87,580.38 - Step 6: Final answer
x = 73,989.07
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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.