Finding the Fourth Proportional to 78,481.97, 117,720.34 and 34,108.76
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Solution
The fourth proportional to 78,481.97, 117,720.34 and 34,108.76 is: 51,162.00
Step by Step Solution
- Step 1: Write the proportion equation
78,481.97 : 117,720.34 = 34,108.76 : x - Step 2: Convert to fraction form
78,481.97/117,720.34 = 34,108.76/x - Step 3: Cross multiply
78,481.97x = 117,720.34 × 34,108.76 - Step 4: Simplify right side
78,481.97x = 4,015,294,824.18 - Step 5: Solve for x
x = 4,015,294,824.18/78,481.97 - Step 6: Final answer
x = 51,162.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.