Finding the Fourth Proportional to 81,777,564.87, 122,667,415.79 and 27,190,150.42
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Solution
The fourth proportional to 81,777,564.87, 122,667,415.79 and 27,190,150.42 is: 40,785,580.89
Step by Step Solution
- Step 1: Write the proportion equation
81,777,564.87 : 122,667,415.79 = 27,190,150.42 : x - Step 2: Convert to fraction form
81,777,564.87/122,667,415.79 = 27,190,150.42/x - Step 3: Cross multiply
81,777,564.87x = 122,667,415.79 × 27,190,150.42 - Step 4: Simplify right side
81,777,564.87x = 3,335,345,486,902,851 - Step 5: Solve for x
x = 3,335,345,486,902,851/81,777,564.87 - Step 6: Final answer
x = 40,785,580.89
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1.5x scale
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.