Finding the Fourth Proportional to 74,512.19, 111,775.57 and 27,140.15
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Solution
The fourth proportional to 74,512.19, 111,775.57 and 27,140.15 is: 40,712.88
Step by Step Solution
- Step 1: Write the proportion equation
74,512.19 : 111,775.57 = 27,140.15 : x - Step 2: Convert to fraction form
74,512.19/111,775.57 = 27,140.15/x - Step 3: Cross multiply
74,512.19x = 111,775.57 × 27,140.15 - Step 4: Simplify right side
74,512.19x = 3,033,605,736.14 - Step 5: Solve for x
x = 3,033,605,736.14/74,512.19 - Step 6: Final answer
x = 40,712.88
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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.