Finding the Fourth Proportional to 87,739.29, 121,079.86 and 47,453.10
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Solution
The fourth proportional to 87,739.29, 121,079.86 and 47,453.10 is: 65,485.08
Step by Step Solution
- Step 1: Write the proportion equation
87,739.29 : 121,079.86 = 47,453.10 : x - Step 2: Convert to fraction form
87,739.29/121,079.86 = 47,453.10/x - Step 3: Cross multiply
87,739.29x = 121,079.86 × 47,453.10 - Step 4: Simplify right side
87,739.29x = 5,745,614,704.57 - Step 5: Solve for x
x = 5,745,614,704.57/87,739.29 - Step 6: Final answer
x = 65,485.08
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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.