Finding the Fourth Proportional to 75,996.72, 104,912.28 and 53,383.68
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Solution
The fourth proportional to 75,996.72, 104,912.28 and 53,383.68 is: 73,695.33
Step by Step Solution
- Step 1: Write the proportion equation
75,996.72 : 104,912.28 = 53,383.68 : x - Step 2: Convert to fraction form
75,996.72/104,912.28 = 53,383.68/x - Step 3: Cross multiply
75,996.72x = 104,912.28 × 53,383.68 - Step 4: Simplify right side
75,996.72x = 5,600,603,583.59 - Step 5: Solve for x
x = 5,600,603,583.59/75,996.72 - Step 6: Final answer
x = 73,695.33
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1.5x scale
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.