Finding the Fourth Proportional to 86,394.79, 119,211.10 and 48,661.75
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Solution
The fourth proportional to 86,394.79, 119,211.10 and 48,661.75 is: 67,145.49
Step by Step Solution
- Step 1: Write the proportion equation
86,394.79 : 119,211.10 = 48,661.75 : x - Step 2: Convert to fraction form
86,394.79/119,211.10 = 48,661.75/x - Step 3: Cross multiply
86,394.79x = 119,211.10 × 48,661.75 - Step 4: Simplify right side
86,394.79x = 5,801,020,745.43 - Step 5: Solve for x
x = 5,801,020,745.43/86,394.79 - Step 6: Final answer
x = 67,145.49
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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.