Finding the Fourth Proportional to 77,579,523.36, 107,161,936.60 and 57,503,220.44
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Solution
The fourth proportional to 77,579,523.36, 107,161,936.60 and 57,503,220.44 is: 79,430,192.36
Step by Step Solution
- Step 1: Write the proportion equation
77,579,523.36 : 107,161,936.60 = 57,503,220.44 : x - Step 2: Convert to fraction form
77,579,523.36/107,161,936.60 = 57,503,220.44/x - Step 3: Cross multiply
77,579,523.36x = 107,161,936.60 × 57,503,220.44 - Step 4: Simplify right side
77,579,523.36x = 6,162,156,463,735,923 - Step 5: Solve for x
x = 6,162,156,463,735,923/77,579,523.36 - Step 6: Final answer
x = 79,430,192.36
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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.