Finding the Fourth Proportional to 71,912.36, 107,867.63 and 21,994.08
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Solution
The fourth proportional to 71,912.36, 107,867.63 and 21,994.08 is: 32,990.84
Step by Step Solution
- Step 1: Write the proportion equation
71,912.36 : 107,867.63 = 21,994.08 : x - Step 2: Convert to fraction form
71,912.36/107,867.63 = 21,994.08/x - Step 3: Cross multiply
71,912.36x = 107,867.63 × 21,994.08 - Step 4: Simplify right side
71,912.36x = 2,372,449,173.66 - Step 5: Solve for x
x = 2,372,449,173.66/71,912.36 - Step 6: Final answer
x = 32,990.84
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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.