Finding the Fourth Proportional to 72,914.99, 100,622.69 and 39,380.99
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Solution
The fourth proportional to 72,914.99, 100,622.69 and 39,380.99 is: 54,345.76
Step by Step Solution
- Step 1: Write the proportion equation
72,914.99 : 100,622.69 = 39,380.99 : x - Step 2: Convert to fraction form
72,914.99/100,622.69 = 39,380.99/x - Step 3: Cross multiply
72,914.99x = 100,622.69 × 39,380.99 - Step 4: Simplify right side
72,914.99x = 3,962,620,596.32 - Step 5: Solve for x
x = 3,962,620,596.32/72,914.99 - Step 6: Final answer
x = 54,345.76
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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.