Finding the Fourth Proportional to 71,438.91, 107,147.84 and 18,852.09
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Solution
The fourth proportional to 71,438.91, 107,147.84 and 18,852.09 is: 28,275.36
Step by Step Solution
- Step 1: Write the proportion equation
71,438.91 : 107,147.84 = 18,852.09 : x - Step 2: Convert to fraction form
71,438.91/107,147.84 = 18,852.09/x - Step 3: Cross multiply
71,438.91x = 107,147.84 × 18,852.09 - Step 4: Simplify right side
71,438.91x = 2,019,960,628.73 - Step 5: Solve for x
x = 2,019,960,628.73/71,438.91 - Step 6: Final answer
x = 28,275.36
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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.