Finding the Fourth Proportional to 8,081,745.20, 12,128,522.70 and 5,690,260.70
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Solution
The fourth proportional to 8,081,745.20, 12,128,522.70 and 5,690,260.70 is: 8,539,548.62
Step by Step Solution
- Step 1: Write the proportion equation
8,081,745.20 : 12,128,522.70 = 5,690,260.70 : x - Step 2: Convert to fraction form
8,081,745.20/12,128,522.70 = 5,690,260.70/x - Step 3: Cross multiply
8,081,745.20x = 12,128,522.70 × 5,690,260.70 - Step 4: Simplify right side
8,081,745.20x = 69,014,456,068,867.89 - Step 5: Solve for x
x = 69,014,456,068,867.89/8,081,745.20 - Step 6: Final answer
x = 8,539,548.62
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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.