Finding the Fourth Proportional to 81,993.71, 113,159.37 and 48,000.12
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Solution
The fourth proportional to 81,993.71, 113,159.37 and 48,000.12 is: 66,244.88
Step by Step Solution
- Step 1: Write the proportion equation
81,993.71 : 113,159.37 = 48,000.12 : x - Step 2: Convert to fraction form
81,993.71/113,159.37 = 48,000.12/x - Step 3: Cross multiply
81,993.71x = 113,159.37 × 48,000.12 - Step 4: Simplify right side
81,993.71x = 5,431,663,339.12 - Step 5: Solve for x
x = 5,431,663,339.12/81,993.71 - Step 6: Final answer
x = 66,244.88
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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.