Finding the Fourth Proportional to 70,928.68, 106,396.67 and 18,338.62
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Solution
The fourth proportional to 70,928.68, 106,396.67 and 18,338.62 is: 27,508.87
Step by Step Solution
- Step 1: Write the proportion equation
70,928.68 : 106,396.67 = 18,338.62 : x - Step 2: Convert to fraction form
70,928.68/106,396.67 = 18,338.62/x - Step 3: Cross multiply
70,928.68x = 106,396.67 × 18,338.62 - Step 4: Simplify right side
70,928.68x = 1,951,168,100.40 - Step 5: Solve for x
x = 1,951,168,100.40/70,928.68 - Step 6: Final answer
x = 27,508.87
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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.