Finding the Fourth Proportional to 77,912.46, 107,576.78 and 47,738.99
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Solution
The fourth proportional to 77,912.46, 107,576.78 and 47,738.99 is: 65,915.09
Step by Step Solution
- Step 1: Write the proportion equation
77,912.46 : 107,576.78 = 47,738.99 : x - Step 2: Convert to fraction form
77,912.46/107,576.78 = 47,738.99/x - Step 3: Cross multiply
77,912.46x = 107,576.78 × 47,738.99 - Step 4: Simplify right side
77,912.46x = 5,135,606,854.90 - Step 5: Solve for x
x = 5,135,606,854.90/77,912.46 - Step 6: Final answer
x = 65,915.09
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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.