Finding the Fourth Proportional to 74,716.21, 103,107.71 and 40,724.70
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Solution
The fourth proportional to 74,716.21, 103,107.71 and 40,724.70 is: 56,199.73
Step by Step Solution
- Step 1: Write the proportion equation
74,716.21 : 103,107.71 = 40,724.70 : x - Step 2: Convert to fraction form
74,716.21/103,107.71 = 40,724.70/x - Step 3: Cross multiply
74,716.21x = 103,107.71 × 40,724.70 - Step 4: Simplify right side
74,716.21x = 4,199,030,557.44 - Step 5: Solve for x
x = 4,199,030,557.44/74,716.21 - Step 6: Final answer
x = 56,199.73
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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.