Finding the Fourth Proportional to 98,732.75, 136,243.69 and 55,716.23
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Solution
The fourth proportional to 98,732.75, 136,243.69 and 55,716.23 is: 76,884.17
Step by Step Solution
- Step 1: Write the proportion equation
98,732.75 : 136,243.69 = 55,716.23 : x - Step 2: Convert to fraction form
98,732.75/136,243.69 = 55,716.23/x - Step 3: Cross multiply
98,732.75x = 136,243.69 × 55,716.23 - Step 4: Simplify right side
98,732.75x = 7,590,984,969.41 - Step 5: Solve for x
x = 7,590,984,969.41/98,732.75 - Step 6: Final answer
x = 76,884.17
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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.