Finding the Fourth Proportional to 38,521,120.80, 57,790,234.80 and 12,961,408.80
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Solution
The fourth proportional to 38,521,120.80, 57,790,234.80 and 12,961,408.80 is: 19,444,991.28
Step by Step Solution
- Step 1: Write the proportion equation
38,521,120.80 : 57,790,234.80 = 12,961,408.80 : x - Step 2: Convert to fraction form
38,521,120.80/57,790,234.80 = 12,961,408.80/x - Step 3: Cross multiply
38,521,120.80x = 57,790,234.80 × 12,961,408.80 - Step 4: Simplify right side
38,521,120.80x = 749,042,857,890,786.25 - Step 5: Solve for x
x = 749,042,857,890,786.25/38,521,120.80 - Step 6: Final answer
x = 19,444,991.28
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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.