Finding the Fourth Proportional to 71,346.12, 107,010.67 and 18,759.70
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Solution
The fourth proportional to 71,346.12, 107,010.67 and 18,759.70 is: 28,137.32
Step by Step Solution
- Step 1: Write the proportion equation
71,346.12 : 107,010.67 = 18,759.70 : x - Step 2: Convert to fraction form
71,346.12/107,010.67 = 18,759.70/x - Step 3: Cross multiply
71,346.12x = 107,010.67 × 18,759.70 - Step 4: Simplify right side
71,346.12x = 2,007,488,188.04 - Step 5: Solve for x
x = 2,007,488,188.04/71,346.12 - Step 6: Final answer
x = 28,137.32
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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.