Finding the Fourth Proportional to 72,906.75, 100,655.06 and 47,799.99
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Solution
The fourth proportional to 72,906.75, 100,655.06 and 47,799.99 is: 65,992.66
Step by Step Solution
- Step 1: Write the proportion equation
72,906.75 : 100,655.06 = 47,799.99 : x - Step 2: Convert to fraction form
72,906.75/100,655.06 = 47,799.99/x - Step 3: Cross multiply
72,906.75x = 100,655.06 × 47,799.99 - Step 4: Simplify right side
72,906.75x = 4,811,310,622.45 - Step 5: Solve for x
x = 4,811,310,622.45/72,906.75 - Step 6: Final answer
x = 65,992.66
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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.