Finding the Fourth Proportional to 75,163.68, 112,750.78 and 30,185.03
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Solution
The fourth proportional to 75,163.68, 112,750.78 and 30,185.03 is: 45,279.66
Step by Step Solution
- Step 1: Write the proportion equation
75,163.68 : 112,750.78 = 30,185.03 : x - Step 2: Convert to fraction form
75,163.68/112,750.78 = 30,185.03/x - Step 3: Cross multiply
75,163.68x = 112,750.78 × 30,185.03 - Step 4: Simplify right side
75,163.68x = 3,403,385,883.24 - Step 5: Solve for x
x = 3,403,385,883.24/75,163.68 - Step 6: Final answer
x = 45,279.66
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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.