Finding the Fourth Proportional to 91,361.58, 126,117.84 and 55,563.09
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Solution
The fourth proportional to 91,361.58, 126,117.84 and 55,563.09 is: 76,700.70
Step by Step Solution
- Step 1: Write the proportion equation
91,361.58 : 126,117.84 = 55,563.09 : x - Step 2: Convert to fraction form
91,361.58/126,117.84 = 55,563.09/x - Step 3: Cross multiply
91,361.58x = 126,117.84 × 55,563.09 - Step 4: Simplify right side
91,361.58x = 7,007,496,894.53 - Step 5: Solve for x
x = 7,007,496,894.53/91,361.58 - Step 6: Final answer
x = 76,700.70
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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.