Finding the Fourth Proportional to 90,299.70, 135,471.42 and 27,119.70
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Solution
The fourth proportional to 90,299.70, 135,471.42 and 27,119.70 is: 40,686.12
Step by Step Solution
- Step 1: Write the proportion equation
90,299.70 : 135,471.42 = 27,119.70 : x - Step 2: Convert to fraction form
90,299.70/135,471.42 = 27,119.70/x - Step 3: Cross multiply
90,299.70x = 135,471.42 × 27,119.70 - Step 4: Simplify right side
90,299.70x = 3,673,944,268.97 - Step 5: Solve for x
x = 3,673,944,268.97/90,299.70 - Step 6: Final answer
x = 40,686.12
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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.