Finding the Fourth Proportional to 91,930.18, 126,912.09 and 61,873.54
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Solution
The fourth proportional to 91,930.18, 126,912.09 and 61,873.54 is: 85,418.09
Step by Step Solution
- Step 1: Write the proportion equation
91,930.18 : 126,912.09 = 61,873.54 : x - Step 2: Convert to fraction form
91,930.18/126,912.09 = 61,873.54/x - Step 3: Cross multiply
91,930.18x = 126,912.09 × 61,873.54 - Step 4: Simplify right side
91,930.18x = 7,852,500,277.10 - Step 5: Solve for x
x = 7,852,500,277.10/91,930.18 - Step 6: Final answer
x = 85,418.09
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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.