Finding the Fourth Proportional to 77,720,149.01, 107,208,843.81 and 50,218,077.26
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Solution
The fourth proportional to 77,720,149.01, 107,208,843.81 and 50,218,077.26 is: 69,271,894.99
Step by Step Solution
- Step 1: Write the proportion equation
77,720,149.01 : 107,208,843.81 = 50,218,077.26 : x - Step 2: Convert to fraction form
77,720,149.01/107,208,843.81 = 50,218,077.26/x - Step 3: Cross multiply
77,720,149.01x = 107,208,843.81 × 50,218,077.26 - Step 4: Simplify right side
77,720,149.01x = 5,383,822,000,869,809 - Step 5: Solve for x
x = 5,383,822,000,869,809/77,720,149.01 - Step 6: Final answer
x = 69,271,894.99
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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.