Finding the Fourth Proportional to 12,126,176.85, 18,192,132.45 and 3,928,805.81
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Solution
The fourth proportional to 12,126,176.85, 18,192,132.45 and 3,928,805.81 is: 5,894,137.66
Step by Step Solution
- Step 1: Write the proportion equation
12,126,176.85 : 18,192,132.45 = 3,928,805.81 : x - Step 2: Convert to fraction form
12,126,176.85/18,192,132.45 = 3,928,805.81/x - Step 3: Cross multiply
12,126,176.85x = 18,192,132.45 × 3,928,805.81 - Step 4: Simplify right side
12,126,176.85x = 71,473,355,665,849.53 - Step 5: Solve for x
x = 71,473,355,665,849.53/12,126,176.85 - Step 6: Final answer
x = 5,894,137.66
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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.