Finding the Fourth Proportional to 71,377.21, 107,057.53 and 18,790.80
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Solution
The fourth proportional to 71,377.21, 107,057.53 and 18,790.80 is: 28,184.02
Step by Step Solution
- Step 1: Write the proportion equation
71,377.21 : 107,057.53 = 18,790.80 : x - Step 2: Convert to fraction form
71,377.21/107,057.53 = 18,790.80/x - Step 3: Cross multiply
71,377.21x = 107,057.53 × 18,790.80 - Step 4: Simplify right side
71,377.21x = 2,011,696,634.72 - Step 5: Solve for x
x = 2,011,696,634.72/71,377.21 - Step 6: Final answer
x = 28,184.02
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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.