Finding the Fourth Proportional to 75,639.42, 104,381.52 and 41,647.20
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Solution
The fourth proportional to 75,639.42, 104,381.52 and 41,647.20 is: 57,472.65
Step by Step Solution
- Step 1: Write the proportion equation
75,639.42 : 104,381.52 = 41,647.20 : x - Step 2: Convert to fraction form
75,639.42/104,381.52 = 41,647.20/x - Step 3: Cross multiply
75,639.42x = 104,381.52 × 41,647.20 - Step 4: Simplify right side
75,639.42x = 4,347,198,039.74 - Step 5: Solve for x
x = 4,347,198,039.74/75,639.42 - Step 6: Final answer
x = 57,472.65
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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.