Finding the Fourth Proportional to 84,689.97, 116,578.76 and 73,199.62
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Solution
The fourth proportional to 84,689.97, 116,578.76 and 73,199.62 is: 100,761.88
Step by Step Solution
- Step 1: Write the proportion equation
84,689.97 : 116,578.76 = 73,199.62 : x - Step 2: Convert to fraction form
84,689.97/116,578.76 = 73,199.62/x - Step 3: Cross multiply
84,689.97x = 116,578.76 × 73,199.62 - Step 4: Simplify right side
84,689.97x = 8,533,520,467.79 - Step 5: Solve for x
x = 8,533,520,467.79/84,689.97 - Step 6: Final answer
x = 100,761.88
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1.5x scale
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.