Finding the Fourth Proportional to 80,678,358.99, 111,322,245.61 and 45,391,267.08
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Solution
The fourth proportional to 80,678,358.99, 111,322,245.61 and 45,391,267.08 is: 62,632,133.89
Step by Step Solution
- Step 1: Write the proportion equation
80,678,358.99 : 111,322,245.61 = 45,391,267.08 : x - Step 2: Convert to fraction form
80,678,358.99/111,322,245.61 = 45,391,267.08/x - Step 3: Cross multiply
80,678,358.99x = 111,322,245.61 × 45,391,267.08 - Step 4: Simplify right side
80,678,358.99x = 5,053,057,782,428,867 - Step 5: Solve for x
x = 5,053,057,782,428,867/80,678,358.99 - Step 6: Final answer
x = 62,632,133.89
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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.