Finding the Fourth Proportional to 90,770.42, 135,543.70 and 74,163.26
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Solution
The fourth proportional to 90,770.42, 135,543.70 and 74,163.26 is: 110,744.92
Step by Step Solution
- Step 1: Write the proportion equation
90,770.42 : 135,543.70 = 74,163.26 : x - Step 2: Convert to fraction form
90,770.42/135,543.70 = 74,163.26/x - Step 3: Cross multiply
90,770.42x = 135,543.70 × 74,163.26 - Step 4: Simplify right side
90,770.42x = 10,052,362,664.46 - Step 5: Solve for x
x = 10,052,362,664.46/90,770.42 - Step 6: Final answer
x = 110,744.92
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.