Finding the Fourth Proportional to 36,399,728.36, 50,231,968.35 and 20,717,987.42
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Solution
The fourth proportional to 36,399,728.36, 50,231,968.35 and 20,717,987.42 is: 28,591,017.99
Step by Step Solution
- Step 1: Write the proportion equation
36,399,728.36 : 50,231,968.35 = 20,717,987.42 : x - Step 2: Convert to fraction form
36,399,728.36/50,231,968.35 = 20,717,987.42/x - Step 3: Cross multiply
36,399,728.36x = 50,231,968.35 × 20,717,987.42 - Step 4: Simplify right side
36,399,728.36x = 1,040,705,288,357,138.25 - Step 5: Solve for x
x = 1,040,705,288,357,138.25/36,399,728.36 - Step 6: Final answer
x = 28,591,017.99
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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.