Finding the Fourth Proportional to 77,163.21, 106,425.18 and 51,661.47
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Solution
The fourth proportional to 77,163.21, 106,425.18 and 51,661.47 is: 71,252.62
Step by Step Solution
- Step 1: Write the proportion equation
77,163.21 : 106,425.18 = 51,661.47 : x - Step 2: Convert to fraction form
77,163.21/106,425.18 = 51,661.47/x - Step 3: Cross multiply
77,163.21x = 106,425.18 × 51,661.47 - Step 4: Simplify right side
77,163.21x = 5,498,081,243.81 - Step 5: Solve for x
x = 5,498,081,243.81/77,163.21 - Step 6: Final answer
x = 71,252.62
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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.