Finding the Fourth Proportional to 91,611,169.05, 126,484,290.44 and 70,380,135.42
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Solution
The fourth proportional to 91,611,169.05, 126,484,290.44 and 70,380,135.42 is: 97,171,355.65
Step by Step Solution
- Step 1: Write the proportion equation
91,611,169.05 : 126,484,290.44 = 70,380,135.42 : x - Step 2: Convert to fraction form
91,611,169.05/126,484,290.44 = 70,380,135.42/x - Step 3: Cross multiply
91,611,169.05x = 126,484,290.44 × 70,380,135.42 - Step 4: Simplify right side
91,611,169.05x = 8,901,981,489,317,911 - Step 5: Solve for x
x = 8,901,981,489,317,911/91,611,169.05 - Step 6: Final answer
x = 97,171,355.65
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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.