Finding the Fourth Proportional to 87,412.86, 120,611.67 and 51,107.31
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Solution
The fourth proportional to 87,412.86, 120,611.67 and 51,107.31 is: 70,517.52
Step by Step Solution
- Step 1: Write the proportion equation
87,412.86 : 120,611.67 = 51,107.31 : x - Step 2: Convert to fraction form
87,412.86/120,611.67 = 51,107.31/x - Step 3: Cross multiply
87,412.86x = 120,611.67 × 51,107.31 - Step 4: Simplify right side
87,412.86x = 6,164,138,008.31 - Step 5: Solve for x
x = 6,164,138,008.31/87,412.86 - Step 6: Final answer
x = 70,517.52
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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.