Finding the Fourth Proportional to 78,912.10, 108,898.69 and 43,102.19
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Solution
The fourth proportional to 78,912.10, 108,898.69 and 43,102.19 is: 59,481.02
Step by Step Solution
- Step 1: Write the proportion equation
78,912.10 : 108,898.69 = 43,102.19 : x - Step 2: Convert to fraction form
78,912.10/108,898.69 = 43,102.19/x - Step 3: Cross multiply
78,912.10x = 108,898.69 × 43,102.19 - Step 4: Simplify right side
78,912.10x = 4,693,772,027.13 - Step 5: Solve for x
x = 4,693,772,027.13/78,912.10 - Step 6: Final answer
x = 59,481.02
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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.