Finding the Fourth Proportional to 207,757.09, 311,635.64 and 49,985.55
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Solution
The fourth proportional to 207,757.09, 311,635.64 and 49,985.55 is: 74,978.32
Step by Step Solution
- Step 1: Write the proportion equation
207,757.09 : 311,635.64 = 49,985.55 : x - Step 2: Convert to fraction form
207,757.09/311,635.64 = 49,985.55/x - Step 3: Cross multiply
207,757.09x = 311,635.64 × 49,985.55 - Step 4: Simplify right side
207,757.09x = 15,577,277,056.90 - Step 5: Solve for x
x = 15,577,277,056.90/207,757.09 - Step 6: Final answer
x = 74,978.32
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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.