Finding the Fourth Proportional to 74,163.11, 102,345.26 and 40,171.46
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Solution
The fourth proportional to 74,163.11, 102,345.26 and 40,171.46 is: 55,436.70
Step by Step Solution
- Step 1: Write the proportion equation
74,163.11 : 102,345.26 = 40,171.46 : x - Step 2: Convert to fraction form
74,163.11/102,345.26 = 40,171.46/x - Step 3: Cross multiply
74,163.11x = 102,345.26 × 40,171.46 - Step 4: Simplify right side
74,163.11x = 4,111,357,805.70 - Step 5: Solve for x
x = 4,111,357,805.70/74,163.11 - Step 6: Final answer
x = 55,436.70
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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.