Finding the Fourth Proportional to 68,649.99, 102,955.10 and 20,616.66
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Solution
The fourth proportional to 68,649.99, 102,955.10 and 20,616.66 is: 30,919.02
Step by Step Solution
- Step 1: Write the proportion equation
68,649.99 : 102,955.10 = 20,616.66 : x - Step 2: Convert to fraction form
68,649.99/102,955.10 = 20,616.66/x - Step 3: Cross multiply
68,649.99x = 102,955.10 × 20,616.66 - Step 4: Simplify right side
68,649.99x = 2,122,590,291.97 - Step 5: Solve for x
x = 2,122,590,291.97/68,649.99 - Step 6: Final answer
x = 30,919.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.