Finding the Fourth Proportional to 32,131,638.70, 44,330,576.76 and 20,535,989.74
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Solution
The fourth proportional to 32,131,638.70, 44,330,576.76 and 20,535,989.74 is: 28,332,581.42
Step by Step Solution
- Step 1: Write the proportion equation
32,131,638.70 : 44,330,576.76 = 20,535,989.74 : x - Step 2: Convert to fraction form
32,131,638.70/44,330,576.76 = 20,535,989.74/x - Step 3: Cross multiply
32,131,638.70x = 44,330,576.76 × 20,535,989.74 - Step 4: Simplify right side
32,131,638.70x = 910,372,269,511,642.38 - Step 5: Solve for x
x = 910,372,269,511,642.38/32,131,638.70 - Step 6: Final answer
x = 28,332,581.42
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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.