Finding the Fourth Proportional to 18,516,775.80, 27,775,163.70 and 5,054,964.60
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Solution
The fourth proportional to 18,516,775.80, 27,775,163.70 and 5,054,964.60 is: 7,582,446.90
Step by Step Solution
- Step 1: Write the proportion equation
18,516,775.80 : 27,775,163.70 = 5,054,964.60 : x - Step 2: Convert to fraction form
18,516,775.80/27,775,163.70 = 5,054,964.60/x - Step 3: Cross multiply
18,516,775.80x = 27,775,163.70 × 5,054,964.60 - Step 4: Simplify right side
18,516,775.80x = 140,402,469,262,705 - Step 5: Solve for x
x = 140,402,469,262,705/18,516,775.80 - Step 6: Final answer
x = 7,582,446.90
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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.