Finding the Fourth Proportional to 74,122.26, 102,287.99 and 40,129.88
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Solution
The fourth proportional to 74,122.26, 102,287.99 and 40,129.88 is: 55,378.83
Step by Step Solution
- Step 1: Write the proportion equation
74,122.26 : 102,287.99 = 40,129.88 : x - Step 2: Convert to fraction form
74,122.26/102,287.99 = 40,129.88/x - Step 3: Cross multiply
74,122.26x = 102,287.99 × 40,129.88 - Step 4: Simplify right side
74,122.26x = 4,104,804,052.05 - Step 5: Solve for x
x = 4,104,804,052.05/74,122.26 - Step 6: Final answer
x = 55,378.83
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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.