Finding the Fourth Proportional to 20,720,617.25, 31,080,903.98 and 7,072,630.99
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Solution
The fourth proportional to 20,720,617.25, 31,080,903.98 and 7,072,630.99 is: 10,608,939.01
Step by Step Solution
- Step 1: Write the proportion equation
20,720,617.25 : 31,080,903.98 = 7,072,630.99 : x - Step 2: Convert to fraction form
20,720,617.25/31,080,903.98 = 7,072,630.99/x - Step 3: Cross multiply
20,720,617.25x = 31,080,903.98 × 7,072,630.99 - Step 4: Simplify right side
20,720,617.25x = 219,823,764,573,096.94 - Step 5: Solve for x
x = 219,823,764,573,096.94/20,720,617.25 - Step 6: Final answer
x = 10,608,939.01
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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.