Finding the Fourth Proportional to 78,112.81, 107,785.95 and 44,121.70
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Solution
The fourth proportional to 78,112.81, 107,785.95 and 44,121.70 is: 60,882.46
Step by Step Solution
- Step 1: Write the proportion equation
78,112.81 : 107,785.95 = 44,121.70 : x - Step 2: Convert to fraction form
78,112.81/107,785.95 = 44,121.70/x - Step 3: Cross multiply
78,112.81x = 107,785.95 × 44,121.70 - Step 4: Simplify right side
78,112.81x = 4,755,699,478.05 - Step 5: Solve for x
x = 4,755,699,478.05/78,112.81 - Step 6: Final answer
x = 60,882.46
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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.