Finding the Fourth Proportional to 75,794.20, 104,534.34 and 66,699.92
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Solution
The fourth proportional to 75,794.20, 104,534.34 and 66,699.92 is: 91,991.63
Step by Step Solution
- Step 1: Write the proportion equation
75,794.20 : 104,534.34 = 66,699.92 : x - Step 2: Convert to fraction form
75,794.20/104,534.34 = 66,699.92/x - Step 3: Cross multiply
75,794.20x = 104,534.34 × 66,699.92 - Step 4: Simplify right side
75,794.20x = 6,972,432,115.25 - Step 5: Solve for x
x = 6,972,432,115.25/75,794.20 - Step 6: Final answer
x = 91,991.63
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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.