Finding the Fourth Proportional to 74,208.11, 102,422.61 and 68,230.31
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Solution
The fourth proportional to 74,208.11, 102,422.61 and 68,230.31 is: 94,172.00
Step by Step Solution
- Step 1: Write the proportion equation
74,208.11 : 102,422.61 = 68,230.31 : x - Step 2: Convert to fraction form
74,208.11/102,422.61 = 68,230.31/x - Step 3: Cross multiply
74,208.11x = 102,422.61 × 68,230.31 - Step 4: Simplify right side
74,208.11x = 6,988,325,919.20 - Step 5: Solve for x
x = 6,988,325,919.20/74,208.11 - Step 6: Final answer
x = 94,172.00
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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.