Finding the Fourth Proportional to 77,055.87, 115,540.05 and 45,912.99
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Solution
The fourth proportional to 77,055.87, 115,540.05 and 45,912.99 is: 68,843.41
Step by Step Solution
- Step 1: Write the proportion equation
77,055.87 : 115,540.05 = 45,912.99 : x - Step 2: Convert to fraction form
77,055.87/115,540.05 = 45,912.99/x - Step 3: Cross multiply
77,055.87x = 115,540.05 × 45,912.99 - Step 4: Simplify right side
77,055.87x = 5,304,789,160.25 - Step 5: Solve for x
x = 5,304,789,160.25/77,055.87 - Step 6: Final answer
x = 68,843.41
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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.