Finding the Fourth Proportional to 81,231.53, 121,848.97 and 25,071.68
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Solution
The fourth proportional to 81,231.53, 121,848.97 and 25,071.68 is: 37,608.03
Step by Step Solution
- Step 1: Write the proportion equation
81,231.53 : 121,848.97 = 25,071.68 : x - Step 2: Convert to fraction form
81,231.53/121,848.97 = 25,071.68/x - Step 3: Cross multiply
81,231.53x = 121,848.97 × 25,071.68 - Step 4: Simplify right side
81,231.53x = 3,054,957,649.57 - Step 5: Solve for x
x = 3,054,957,649.57/81,231.53 - Step 6: Final answer
x = 37,608.03
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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.