Finding the Fourth Proportional to 77,106.36, 115,580.76 and 43,755.99
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Solution
The fourth proportional to 77,106.36, 115,580.76 and 43,755.99 is: 65,589.28
Step by Step Solution
- Step 1: Write the proportion equation
77,106.36 : 115,580.76 = 43,755.99 : x - Step 2: Convert to fraction form
77,106.36/115,580.76 = 43,755.99/x - Step 3: Cross multiply
77,106.36x = 115,580.76 × 43,755.99 - Step 4: Simplify right side
77,106.36x = 5,057,350,578.75 - Step 5: Solve for x
x = 5,057,350,578.75/77,106.36 - Step 6: Final answer
x = 65,589.28
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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.