Finding the Fourth Proportional to 71,859.58, 107,784.36 and 26,872.38
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Solution
The fourth proportional to 71,859.58, 107,784.36 and 26,872.38 is: 40,306.70
Step by Step Solution
- Step 1: Write the proportion equation
71,859.58 : 107,784.36 = 26,872.38 : x - Step 2: Convert to fraction form
71,859.58/107,784.36 = 26,872.38/x - Step 3: Cross multiply
71,859.58x = 107,784.36 × 26,872.38 - Step 4: Simplify right side
71,859.58x = 2,896,422,279.98 - Step 5: Solve for x
x = 2,896,422,279.98/71,859.58 - Step 6: Final answer
x = 40,306.70
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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.