Finding the Fourth Proportional to 71,878.74, 107,818.11 and 27,519.09
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Solution
The fourth proportional to 71,878.74, 107,818.11 and 27,519.09 is: 41,278.64
Step by Step Solution
- Step 1: Write the proportion equation
71,878.74 : 107,818.11 = 27,519.09 : x - Step 2: Convert to fraction form
71,878.74/107,818.11 = 27,519.09/x - Step 3: Cross multiply
71,878.74x = 107,818.11 × 27,519.09 - Step 4: Simplify right side
71,878.74x = 2,967,056,272.72 - Step 5: Solve for x
x = 2,967,056,272.72/71,878.74 - Step 6: Final answer
x = 41,278.64
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1.5x scale
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.