Finding the Fourth Proportional to 75,680.45, 104,439.74 and 41,689.09
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Solution
The fourth proportional to 75,680.45, 104,439.74 and 41,689.09 is: 57,531.34
Step by Step Solution
- Step 1: Write the proportion equation
75,680.45 : 104,439.74 = 41,689.09 : x - Step 2: Convert to fraction form
75,680.45/104,439.74 = 41,689.09/x - Step 3: Cross multiply
75,680.45x = 104,439.74 × 41,689.09 - Step 4: Simplify right side
75,680.45x = 4,353,997,720.44 - Step 5: Solve for x
x = 4,353,997,720.44/75,680.45 - Step 6: Final answer
x = 57,531.34
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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.