Finding the Fourth Proportional to 128,529,914.43, 192,660,324.81 and 53,789,970.37
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Solution
The fourth proportional to 128,529,914.43, 192,660,324.81 and 53,789,970.37 is: 80,628,647.49
Step by Step Solution
- Step 1: Write the proportion equation
128,529,914.43 : 192,660,324.81 = 53,789,970.37 : x - Step 2: Convert to fraction form
128,529,914.43/192,660,324.81 = 53,789,970.37/x - Step 3: Cross multiply
128,529,914.43x = 192,660,324.81 × 53,789,970.37 - Step 4: Simplify right side
128,529,914.43x = 10,363,193,163,004,476 - Step 5: Solve for x
x = 10,363,193,163,004,476/128,529,914.43 - Step 6: Final answer
x = 80,628,647.49
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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.