Finding the Fourth Proportional to 74,231.68, 102,357.12 and 57,197.92
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Solution
The fourth proportional to 74,231.68, 102,357.12 and 57,197.92 is: 78,869.48
Step by Step Solution
- Step 1: Write the proportion equation
74,231.68 : 102,357.12 = 57,197.92 : x - Step 2: Convert to fraction form
74,231.68/102,357.12 = 57,197.92/x - Step 3: Cross multiply
74,231.68x = 102,357.12 × 57,197.92 - Step 4: Simplify right side
74,231.68x = 5,854,614,361.19 - Step 5: Solve for x
x = 5,854,614,361.19/74,231.68 - Step 6: Final answer
x = 78,869.48
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.