Finding the Fourth Proportional to 28,785,982.08, 43,190,907.84 and 12,603,580.80
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Solution
The fourth proportional to 28,785,982.08, 43,190,907.84 and 12,603,580.80 is: 18,910,596.67
Step by Step Solution
- Step 1: Write the proportion equation
28,785,982.08 : 43,190,907.84 = 12,603,580.80 : x - Step 2: Convert to fraction form
28,785,982.08/43,190,907.84 = 12,603,580.80/x - Step 3: Cross multiply
28,785,982.08x = 43,190,907.84 × 12,603,580.80 - Step 4: Simplify right side
28,785,982.08x = 544,360,096,786,793.56 - Step 5: Solve for x
x = 544,360,096,786,793.56/28,785,982.08 - Step 6: Final answer
x = 18,910,596.67
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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.