Finding the Fourth Proportional to 84,134.84, 126,201.12 and 20,955.44
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Solution
The fourth proportional to 84,134.84, 126,201.12 and 20,955.44 is: 31,432.88
Step by Step Solution
- Step 1: Write the proportion equation
84,134.84 : 126,201.12 = 20,955.44 : x - Step 2: Convert to fraction form
84,134.84/126,201.12 = 20,955.44/x - Step 3: Cross multiply
84,134.84x = 126,201.12 × 20,955.44 - Step 4: Simplify right side
84,134.84x = 2,644,599,998.09 - Step 5: Solve for x
x = 2,644,599,998.09/84,134.84 - Step 6: Final answer
x = 31,432.88
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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.