Finding the Fourth Proportional to 71,971.44, 107,956.99 and 19,380.97
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Solution
The fourth proportional to 71,971.44, 107,956.99 and 19,380.97 is: 29,071.41
Step by Step Solution
- Step 1: Write the proportion equation
71,971.44 : 107,956.99 = 19,380.97 : x - Step 2: Convert to fraction form
71,971.44/107,956.99 = 19,380.97/x - Step 3: Cross multiply
71,971.44x = 107,956.99 × 19,380.97 - Step 4: Simplify right side
71,971.44x = 2,092,311,184.48 - Step 5: Solve for x
x = 2,092,311,184.48/71,971.44 - Step 6: Final answer
x = 29,071.41
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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.