Finding the Fourth Proportional to 91,099.21, 125,716.58 and 50,812.94
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Solution
The fourth proportional to 91,099.21, 125,716.58 and 50,812.94 is: 70,121.66
Step by Step Solution
- Step 1: Write the proportion equation
91,099.21 : 125,716.58 = 50,812.94 : x - Step 2: Convert to fraction form
91,099.21/125,716.58 = 50,812.94/x - Step 3: Cross multiply
91,099.21x = 125,716.58 × 50,812.94 - Step 4: Simplify right side
91,099.21x = 6,388,028,153.90 - Step 5: Solve for x
x = 6,388,028,153.90/91,099.21 - Step 6: Final answer
x = 70,121.66
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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.