Finding the Fourth Proportional to 102,361.79, 141,257.81 and 57,041.68
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Solution
The fourth proportional to 102,361.79, 141,257.81 and 57,041.68 is: 78,716.70
Step by Step Solution
- Step 1: Write the proportion equation
102,361.79 : 141,257.81 = 57,041.68 : x - Step 2: Convert to fraction form
102,361.79/141,257.81 = 57,041.68/x - Step 3: Cross multiply
102,361.79x = 141,257.81 × 57,041.68 - Step 4: Simplify right side
102,361.79x = 8,057,581,804.02 - Step 5: Solve for x
x = 8,057,581,804.02/102,361.79 - Step 6: Final answer
x = 78,716.70
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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.