Finding the Fourth Proportional to 82,780,507.44, 124,189,973.99 and 28,193,565.88
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Solution
The fourth proportional to 82,780,507.44, 124,189,973.99 and 28,193,565.88 is: 42,296,892.37
Step by Step Solution
- Step 1: Write the proportion equation
82,780,507.44 : 124,189,973.99 = 28,193,565.88 : x - Step 2: Convert to fraction form
82,780,507.44/124,189,973.99 = 28,193,565.88/x - Step 3: Cross multiply
82,780,507.44x = 124,189,973.99 × 28,193,565.88 - Step 4: Simplify right side
82,780,507.44x = 3,501,358,213,322,551 - Step 5: Solve for x
x = 3,501,358,213,322,551/82,780,507.44 - Step 6: Final answer
x = 42,296,892.37
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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.