Finding the Fourth Proportional to 86,276.67, 129,446.14 and 30,125.05
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Solution
The fourth proportional to 86,276.67, 129,446.14 and 30,125.05 is: 45,198.45
Step by Step Solution
- Step 1: Write the proportion equation
86,276.67 : 129,446.14 = 30,125.05 : x - Step 2: Convert to fraction form
86,276.67/129,446.14 = 30,125.05/x - Step 3: Cross multiply
86,276.67x = 129,446.14 × 30,125.05 - Step 4: Simplify right side
86,276.67x = 3,899,571,439.81 - Step 5: Solve for x
x = 3,899,571,439.81/86,276.67 - Step 6: Final answer
x = 45,198.45
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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.