Finding the Fourth Proportional to 11,178,138.60, 16,767,207.90 and 5,119,711.20
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Solution
The fourth proportional to 11,178,138.60, 16,767,207.90 and 5,119,711.20 is: 7,679,566.80
Step by Step Solution
- Step 1: Write the proportion equation
11,178,138.60 : 16,767,207.90 = 5,119,711.20 : x - Step 2: Convert to fraction form
11,178,138.60/16,767,207.90 = 5,119,711.20/x - Step 3: Cross multiply
11,178,138.60x = 16,767,207.90 × 5,119,711.20 - Step 4: Simplify right side
11,178,138.60x = 85,843,262,078,358.48 - Step 5: Solve for x
x = 85,843,262,078,358.48/11,178,138.60 - Step 6: Final answer
x = 7,679,566.80
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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.