Finding the Fourth Proportional to 100,576.28, 138,798.26 and 55,257.09
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Solution
The fourth proportional to 100,576.28, 138,798.26 and 55,257.09 is: 76,256.42
Step by Step Solution
- Step 1: Write the proportion equation
100,576.28 : 138,798.26 = 55,257.09 : x - Step 2: Convert to fraction form
100,576.28/138,798.26 = 55,257.09/x - Step 3: Cross multiply
100,576.28x = 138,798.26 × 55,257.09 - Step 4: Simplify right side
100,576.28x = 7,669,587,355.10 - Step 5: Solve for x
x = 7,669,587,355.10/100,576.28 - Step 6: Final answer
x = 76,256.42
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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.