Finding the Fourth Proportional to 74,067.75, 102,213.70 and 40,533.75
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Solution
The fourth proportional to 74,067.75, 102,213.70 and 40,533.75 is: 55,936.69
Step by Step Solution
- Step 1: Write the proportion equation
74,067.75 : 102,213.70 = 40,533.75 : x - Step 2: Convert to fraction form
74,067.75/102,213.70 = 40,533.75/x - Step 3: Cross multiply
74,067.75x = 102,213.70 × 40,533.75 - Step 4: Simplify right side
74,067.75x = 4,143,104,461.04 - Step 5: Solve for x
x = 4,143,104,461.04/74,067.75 - Step 6: Final answer
x = 55,936.69
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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.