Finding the Fourth Proportional to 128,907.09, 193,431.09 and 50,024.43
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Solution
The fourth proportional to 128,907.09, 193,431.09 and 50,024.43 is: 75,063.99
Step by Step Solution
- Step 1: Write the proportion equation
128,907.09 : 193,431.09 = 50,024.43 : x - Step 2: Convert to fraction form
128,907.09/193,431.09 = 50,024.43/x - Step 3: Cross multiply
128,907.09x = 193,431.09 × 50,024.43 - Step 4: Simplify right side
128,907.09x = 9,676,280,021.53 - Step 5: Solve for x
x = 9,676,280,021.53/128,907.09 - Step 6: Final answer
x = 75,063.99
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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.