Finding the Fourth Proportional to 84,392,912.81, 126,588,658.09 and 65,964,358.81
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Solution
The fourth proportional to 84,392,912.81, 126,588,658.09 and 65,964,358.81 is: 98,945,982.37
Step by Step Solution
- Step 1: Write the proportion equation
84,392,912.81 : 126,588,658.09 = 65,964,358.81 : x - Step 2: Convert to fraction form
84,392,912.81/126,588,658.09 = 65,964,358.81/x - Step 3: Cross multiply
84,392,912.81x = 126,588,658.09 × 65,964,358.81 - Step 4: Simplify right side
84,392,912.81x = 8,350,339,663,043,787 - Step 5: Solve for x
x = 8,350,339,663,043,787/84,392,912.81 - Step 6: Final answer
x = 98,945,982.37
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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.