Finding the Fourth Proportional to 87,757.81, 121,095.39 and 49,515.13
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Solution
The fourth proportional to 87,757.81, 121,095.39 and 49,515.13 is: 68,325.02
Step by Step Solution
- Step 1: Write the proportion equation
87,757.81 : 121,095.39 = 49,515.13 : x - Step 2: Convert to fraction form
87,757.81/121,095.39 = 49,515.13/x - Step 3: Cross multiply
87,757.81x = 121,095.39 × 49,515.13 - Step 4: Simplify right side
87,757.81x = 5,996,053,978.25 - Step 5: Solve for x
x = 5,996,053,978.25/87,757.81 - Step 6: Final answer
x = 68,325.02
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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.