Finding the Fourth Proportional to 86,972.63, 120,022.68 and 48,732.26
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Solution
The fourth proportional to 86,972.63, 120,022.68 and 48,732.26 is: 67,250.77
Step by Step Solution
- Step 1: Write the proportion equation
86,972.63 : 120,022.68 = 48,732.26 : x - Step 2: Convert to fraction form
86,972.63/120,022.68 = 48,732.26/x - Step 3: Cross multiply
86,972.63x = 120,022.68 × 48,732.26 - Step 4: Simplify right side
86,972.63x = 5,848,975,847.54 - Step 5: Solve for x
x = 5,848,975,847.54/86,972.63 - Step 6: Final answer
x = 67,250.77
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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.