Finding the Fourth Proportional to 86,922.09, 119,955.36 and 51,115.41
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Solution
The fourth proportional to 86,922.09, 119,955.36 and 51,115.41 is: 70,540.96
Step by Step Solution
- Step 1: Write the proportion equation
86,922.09 : 119,955.36 = 51,115.41 : x - Step 2: Convert to fraction form
86,922.09/119,955.36 = 51,115.41/x - Step 3: Cross multiply
86,922.09x = 119,955.36 × 51,115.41 - Step 4: Simplify right side
86,922.09x = 6,131,567,408.10 - Step 5: Solve for x
x = 6,131,567,408.10/86,922.09 - Step 6: Final answer
x = 70,540.96
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1.5x scale
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.