Finding the Fourth Proportional to 72,940.26, 100,657.58 and 39,406.26
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Solution
The fourth proportional to 72,940.26, 100,657.58 and 39,406.26 is: 54,380.65
Step by Step Solution
- Step 1: Write the proportion equation
72,940.26 : 100,657.58 = 39,406.26 : x - Step 2: Convert to fraction form
72,940.26/100,657.58 = 39,406.26/x - Step 3: Cross multiply
72,940.26x = 100,657.58 × 39,406.26 - Step 4: Simplify right side
72,940.26x = 3,966,538,571.42 - Step 5: Solve for x
x = 3,966,538,571.42/72,940.26 - Step 6: Final answer
x = 54,380.65
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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.