Finding the Fourth Proportional to 77,768,121.62, 107,323,268.21 and 44,728,379.97
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Solution
The fourth proportional to 77,768,121.62, 107,323,268.21 and 44,728,379.97 is: 61,727,039.56
Step by Step Solution
- Step 1: Write the proportion equation
77,768,121.62 : 107,323,268.21 = 44,728,379.97 : x - Step 2: Convert to fraction form
77,768,121.62/107,323,268.21 = 44,728,379.97/x - Step 3: Cross multiply
77,768,121.62x = 107,323,268.21 × 44,728,379.97 - Step 4: Simplify right side
77,768,121.62x = 4,800,395,920,119,101 - Step 5: Solve for x
x = 4,800,395,920,119,101/77,768,121.62 - Step 6: Final answer
x = 61,727,039.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.