Finding the Fourth Proportional to 74,422.87, 102,704.09 and 40,431.65
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Solution
The fourth proportional to 74,422.87, 102,704.09 and 40,431.65 is: 55,795.96
Step by Step Solution
- Step 1: Write the proportion equation
74,422.87 : 102,704.09 = 40,431.65 : x - Step 2: Convert to fraction form
74,422.87/102,704.09 = 40,431.65/x - Step 3: Cross multiply
74,422.87x = 102,704.09 × 40,431.65 - Step 4: Simplify right side
74,422.87x = 4,152,495,104.77 - Step 5: Solve for x
x = 4,152,495,104.77/74,422.87 - Step 6: Final answer
x = 55,795.96
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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.