Finding the Fourth Proportional to 82,947,745.80, 124,421,618.70 and 47,115,937.80
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Solution
The fourth proportional to 82,947,745.80, 124,421,618.70 and 47,115,937.80 is: 70,673,906.70
Step by Step Solution
- Step 1: Write the proportion equation
82,947,745.80 : 124,421,618.70 = 47,115,937.80 : x - Step 2: Convert to fraction form
82,947,745.80/124,421,618.70 = 47,115,937.80/x - Step 3: Cross multiply
82,947,745.80x = 124,421,618.70 × 47,115,937.80 - Step 4: Simplify right side
82,947,745.80x = 5,862,241,247,644,517 - Step 5: Solve for x
x = 5,862,241,247,644,517/82,947,745.80 - Step 6: Final answer
x = 70,673,906.70
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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.