Finding the Fourth Proportional to 66,872.99, 100,324.98 and 19,489.21
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Solution
The fourth proportional to 66,872.99, 100,324.98 and 19,489.21 is: 29,238.33
Step by Step Solution
- Step 1: Write the proportion equation
66,872.99 : 100,324.98 = 19,489.21 : x - Step 2: Convert to fraction form
66,872.99/100,324.98 = 19,489.21/x - Step 3: Cross multiply
66,872.99x = 100,324.98 × 19,489.21 - Step 4: Simplify right side
66,872.99x = 1,955,254,352.65 - Step 5: Solve for x
x = 1,955,254,352.65/66,872.99 - Step 6: Final answer
x = 29,238.33
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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.