Finding the Fourth Proportional to 86,315.44, 129,504.34 and 30,163.84
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Solution
The fourth proportional to 86,315.44, 129,504.34 and 30,163.84 is: 45,256.66
Step by Step Solution
- Step 1: Write the proportion equation
86,315.44 : 129,504.34 = 30,163.84 : x - Step 2: Convert to fraction form
86,315.44/129,504.34 = 30,163.84/x - Step 3: Cross multiply
86,315.44x = 129,504.34 × 30,163.84 - Step 4: Simplify right side
86,315.44x = 3,906,348,191.07 - Step 5: Solve for x
x = 3,906,348,191.07/86,315.44 - Step 6: Final answer
x = 45,256.66
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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.