Finding the Fourth Proportional to 74,884.62, 103,339.26 and 40,891.80
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Solution
The fourth proportional to 74,884.62, 103,339.26 and 40,891.80 is: 56,429.86
Step by Step Solution
- Step 1: Write the proportion equation
74,884.62 : 103,339.26 = 40,891.80 : x - Step 2: Convert to fraction form
74,884.62/103,339.26 = 40,891.80/x - Step 3: Cross multiply
74,884.62x = 103,339.26 × 40,891.80 - Step 4: Simplify right side
74,884.62x = 4,225,728,352.07 - Step 5: Solve for x
x = 4,225,728,352.07/74,884.62 - Step 6: Final answer
x = 56,429.86
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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.