Finding the Fourth Proportional to 74,310.97, 102,548.99 and 40,319.44
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Solution
The fourth proportional to 74,310.97, 102,548.99 and 40,319.44 is: 55,640.75
Step by Step Solution
- Step 1: Write the proportion equation
74,310.97 : 102,548.99 = 40,319.44 : x - Step 2: Convert to fraction form
74,310.97/102,548.99 = 40,319.44/x - Step 3: Cross multiply
74,310.97x = 102,548.99 × 40,319.44 - Step 4: Simplify right side
74,310.97x = 4,134,718,220.11 - Step 5: Solve for x
x = 4,134,718,220.11/74,310.97 - Step 6: Final answer
x = 55,640.75
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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.