Finding the Fourth Proportional to 81,343.89, 121,987.26 and 24,400.82
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Solution
The fourth proportional to 81,343.89, 121,987.26 and 24,400.82 is: 36,592.65
Step by Step Solution
- Step 1: Write the proportion equation
81,343.89 : 121,987.26 = 24,400.82 : x - Step 2: Convert to fraction form
81,343.89/121,987.26 = 24,400.82/x - Step 3: Cross multiply
81,343.89x = 121,987.26 × 24,400.82 - Step 4: Simplify right side
81,343.89x = 2,976,589,021.07 - Step 5: Solve for x
x = 2,976,589,021.07/81,343.89 - Step 6: Final answer
x = 36,592.65
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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.