Finding the Fourth Proportional to 77,100.36, 115,571.76 and 43,749.99
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Solution
The fourth proportional to 77,100.36, 115,571.76 and 43,749.99 is: 65,580.28
Step by Step Solution
- Step 1: Write the proportion equation
77,100.36 : 115,571.76 = 43,749.99 : x - Step 2: Convert to fraction form
77,100.36/115,571.76 = 43,749.99/x - Step 3: Cross multiply
77,100.36x = 115,571.76 × 43,749.99 - Step 4: Simplify right side
77,100.36x = 5,056,263,344.28 - Step 5: Solve for x
x = 5,056,263,344.28/77,100.36 - Step 6: Final answer
x = 65,580.28
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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.