Finding the Fourth Proportional to 78,761.40, 108,693.60 and 44,775.62
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Solution
The fourth proportional to 78,761.40, 108,693.60 and 44,775.62 is: 61,791.99
Step by Step Solution
- Step 1: Write the proportion equation
78,761.40 : 108,693.60 = 44,775.62 : x - Step 2: Convert to fraction form
78,761.40/108,693.60 = 44,775.62/x - Step 3: Cross multiply
78,761.40x = 108,693.60 × 44,775.62 - Step 4: Simplify right side
78,761.40x = 4,866,823,330.03 - Step 5: Solve for x
x = 4,866,823,330.03/78,761.40 - Step 6: Final answer
x = 61,791.99
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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.