Finding the Fourth Proportional to 87,761.81, 121,111.61 and 47,475.75
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Solution
The fourth proportional to 87,761.81, 121,111.61 and 47,475.75 is: 65,516.70
Step by Step Solution
- Step 1: Write the proportion equation
87,761.81 : 121,111.61 = 47,475.75 : x - Step 2: Convert to fraction form
87,761.81/121,111.61 = 47,475.75/x - Step 3: Cross multiply
87,761.81x = 121,111.61 × 47,475.75 - Step 4: Simplify right side
87,761.81x = 5,749,864,735.25 - Step 5: Solve for x
x = 5,749,864,735.25/87,761.81 - Step 6: Final answer
x = 65,516.70
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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.