Finding the Fourth Proportional to 74,343.51, 111,455.78 and 38,786.99
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Solution
The fourth proportional to 74,343.51, 111,455.78 and 38,786.99 is: 58,149.44
Step by Step Solution
- Step 1: Write the proportion equation
74,343.51 : 111,455.78 = 38,786.99 : x - Step 2: Convert to fraction form
74,343.51/111,455.78 = 38,786.99/x - Step 3: Cross multiply
74,343.51x = 111,455.78 × 38,786.99 - Step 4: Simplify right side
74,343.51x = 4,323,033,473.09 - Step 5: Solve for x
x = 4,323,033,473.09/74,343.51 - Step 6: Final answer
x = 58,149.44
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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.