Finding the Fourth Proportional to 74,280.75, 111,380.79 and 33,731.99
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Solution
The fourth proportional to 74,280.75, 111,380.79 and 33,731.99 is: 50,579.67
Step by Step Solution
- Step 1: Write the proportion equation
74,280.75 : 111,380.79 = 33,731.99 : x - Step 2: Convert to fraction form
74,280.75/111,380.79 = 33,731.99/x - Step 3: Cross multiply
74,280.75x = 111,380.79 × 33,731.99 - Step 4: Simplify right side
74,280.75x = 3,757,095,972.92 - Step 5: Solve for x
x = 3,757,095,972.92/74,280.75 - Step 6: Final answer
x = 50,579.67
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1.5x scale
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.