Finding the Fourth Proportional to 82,719,835.20, 124,079,752.80 and 46,440,129.60
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Solution
The fourth proportional to 82,719,835.20, 124,079,752.80 and 46,440,129.60 is: 69,660,194.40
Step by Step Solution
- Step 1: Write the proportion equation
82,719,835.20 : 124,079,752.80 = 46,440,129.60 : x - Step 2: Convert to fraction form
82,719,835.20/124,079,752.80 = 46,440,129.60/x - Step 3: Cross multiply
82,719,835.20x = 124,079,752.80 × 46,440,129.60 - Step 4: Simplify right side
82,719,835.20x = 5,762,279,800,767,963 - Step 5: Solve for x
x = 5,762,279,800,767,963/82,719,835.20 - Step 6: Final answer
x = 69,660,194.40
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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.