Finding the Fourth Proportional to 87,609.93, 120,906.17 and 53,607.75
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Solution
The fourth proportional to 87,609.93, 120,906.17 and 53,607.75 is: 73,981.43
Step by Step Solution
- Step 1: Write the proportion equation
87,609.93 : 120,906.17 = 53,607.75 : x - Step 2: Convert to fraction form
87,609.93/120,906.17 = 53,607.75/x - Step 3: Cross multiply
87,609.93x = 120,906.17 × 53,607.75 - Step 4: Simplify right side
87,609.93x = 6,481,507,734.82 - Step 5: Solve for x
x = 6,481,507,734.82/87,609.93 - Step 6: Final answer
x = 73,981.43
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1.5x scale
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.