Finding the Fourth Proportional to 71,729.70, 107,464.95 and 61,361.70
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Solution
The fourth proportional to 71,729.70, 107,464.95 and 61,361.70 is: 91,931.68
Step by Step Solution
- Step 1: Write the proportion equation
71,729.70 : 107,464.95 = 61,361.70 : x - Step 2: Convert to fraction form
71,729.70/107,464.95 = 61,361.70/x - Step 3: Cross multiply
71,729.70x = 107,464.95 × 61,361.70 - Step 4: Simplify right side
71,729.70x = 6,594,232,022.42 - Step 5: Solve for x
x = 6,594,232,022.42/71,729.70 - Step 6: Final answer
x = 91,931.68
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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.