Finding the Fourth Proportional to 84,343.19, 126,471.78 and 28,163.12
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Solution
The fourth proportional to 84,343.19, 126,471.78 and 28,163.12 is: 42,230.32
Step by Step Solution
- Step 1: Write the proportion equation
84,343.19 : 126,471.78 = 28,163.12 : x - Step 2: Convert to fraction form
84,343.19/126,471.78 = 28,163.12/x - Step 3: Cross multiply
84,343.19x = 126,471.78 × 28,163.12 - Step 4: Simplify right side
84,343.19x = 3,561,839,284.39 - Step 5: Solve for x
x = 3,561,839,284.39/84,343.19 - Step 6: Final answer
x = 42,230.32
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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.