Finding the Fourth Proportional to 87,683.10, 121,003.84 and 51,872.19
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Solution
The fourth proportional to 87,683.10, 121,003.84 and 51,872.19 is: 71,584.31
Step by Step Solution
- Step 1: Write the proportion equation
87,683.10 : 121,003.84 = 51,872.19 : x - Step 2: Convert to fraction form
87,683.10/121,003.84 = 51,872.19/x - Step 3: Cross multiply
87,683.10x = 121,003.84 × 51,872.19 - Step 4: Simplify right side
87,683.10x = 6,276,734,179.21 - Step 5: Solve for x
x = 6,276,734,179.21/87,683.10 - Step 6: Final answer
x = 71,584.31
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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.