Finding the Fourth Proportional to 86,912.76, 119,935.98 and 49,189.08
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Solution
The fourth proportional to 86,912.76, 119,935.98 and 49,189.08 is: 67,878.88
Step by Step Solution
- Step 1: Write the proportion equation
86,912.76 : 119,935.98 = 49,189.08 : x - Step 2: Convert to fraction form
86,912.76/119,935.98 = 49,189.08/x - Step 3: Cross multiply
86,912.76x = 119,935.98 × 49,189.08 - Step 4: Simplify right side
86,912.76x = 5,899,540,515.10 - Step 5: Solve for x
x = 5,899,540,515.10/86,912.76 - Step 6: Final answer
x = 67,878.88
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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.