Finding the Fourth Proportional to 84,421.41, 126,540.99 and 54,860.46
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Solution
The fourth proportional to 84,421.41, 126,540.99 and 54,860.46 is: 82,231.47
Step by Step Solution
- Step 1: Write the proportion equation
84,421.41 : 126,540.99 = 54,860.46 : x - Step 2: Convert to fraction form
84,421.41/126,540.99 = 54,860.46/x - Step 3: Cross multiply
84,421.41x = 126,540.99 × 54,860.46 - Step 4: Simplify right side
84,421.41x = 6,942,096,920.26 - Step 5: Solve for x
x = 6,942,096,920.26/84,421.41 - Step 6: Final answer
x = 82,231.47
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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.