Finding the Fourth Proportional to 87,785.08, 121,134.60 and 49,541.20
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Solution
The fourth proportional to 87,785.08, 121,134.60 and 49,541.20 is: 68,361.88
Step by Step Solution
- Step 1: Write the proportion equation
87,785.08 : 121,134.60 = 49,541.20 : x - Step 2: Convert to fraction form
87,785.08/121,134.60 = 49,541.20/x - Step 3: Cross multiply
87,785.08x = 121,134.60 × 49,541.20 - Step 4: Simplify right side
87,785.08x = 6,001,153,445.52 - Step 5: Solve for x
x = 6,001,153,445.52/87,785.08 - Step 6: Final answer
x = 68,361.88
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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.