Finding the Fourth Proportional to 74,262.75, 102,482.60 and 40,728.75
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Solution
The fourth proportional to 74,262.75, 102,482.60 and 40,728.75 is: 56,205.68
Step by Step Solution
- Step 1: Write the proportion equation
74,262.75 : 102,482.60 = 40,728.75 : x - Step 2: Convert to fraction form
74,262.75/102,482.60 = 40,728.75/x - Step 3: Cross multiply
74,262.75x = 102,482.60 × 40,728.75 - Step 4: Simplify right side
74,262.75x = 4,173,987,991.11 - Step 5: Solve for x
x = 4,173,987,991.11/74,262.75 - Step 6: Final answer
x = 56,205.68
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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.