Finding the Fourth Proportional to 82,999,105.20, 124,498,657.80 and 39,857,905.80
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Solution
The fourth proportional to 82,999,105.20, 124,498,657.80 and 39,857,905.80 is: 59,786,858.70
Step by Step Solution
- Step 1: Write the proportion equation
82,999,105.20 : 124,498,657.80 = 39,857,905.80 : x - Step 2: Convert to fraction form
82,999,105.20/124,498,657.80 = 39,857,905.80/x - Step 3: Cross multiply
82,999,105.20x = 124,498,657.80 × 39,857,905.80 - Step 4: Simplify right side
82,999,105.20x = 4,962,255,774,818,835 - Step 5: Solve for x
x = 4,962,255,774,818,835/82,999,105.20 - Step 6: Final answer
x = 59,786,858.70
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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.