Finding the Fourth Proportional to 81,720.81, 122,588.24 and 22,556.48
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Solution
The fourth proportional to 81,720.81, 122,588.24 and 22,556.48 is: 33,836.65
Step by Step Solution
- Step 1: Write the proportion equation
81,720.81 : 122,588.24 = 22,556.48 : x - Step 2: Convert to fraction form
81,720.81/122,588.24 = 22,556.48/x - Step 3: Cross multiply
81,720.81x = 122,588.24 × 22,556.48 - Step 4: Simplify right side
81,720.81x = 2,765,158,600.81 - Step 5: Solve for x
x = 2,765,158,600.81/81,720.81 - Step 6: Final answer
x = 33,836.65
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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.