Finding the Fourth Proportional to 11,178,821.20, 16,768,231.80 and 5,113,541.20
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Solution
The fourth proportional to 11,178,821.20, 16,768,231.80 and 5,113,541.20 is: 7,670,311.80
Step by Step Solution
- Step 1: Write the proportion equation
11,178,821.20 : 16,768,231.80 = 5,113,541.20 : x - Step 2: Convert to fraction form
11,178,821.20/16,768,231.80 = 5,113,541.20/x - Step 3: Cross multiply
11,178,821.20x = 16,768,231.80 × 5,113,541.20 - Step 4: Simplify right side
11,178,821.20x = 85,745,044,160,450.17 - Step 5: Solve for x
x = 85,745,044,160,450.17/11,178,821.20 - Step 6: Final answer
x = 7,670,311.80
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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.