Finding the Fourth Proportional to 68,391.11, 102,586.57 and 38,015.55
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Solution
The fourth proportional to 68,391.11, 102,586.57 and 38,015.55 is: 57,023.28
Step by Step Solution
- Step 1: Write the proportion equation
68,391.11 : 102,586.57 = 38,015.55 : x - Step 2: Convert to fraction form
68,391.11/102,586.57 = 38,015.55/x - Step 3: Cross multiply
68,391.11x = 102,586.57 × 38,015.55 - Step 4: Simplify right side
68,391.11x = 3,899,885,313.38 - Step 5: Solve for x
x = 3,899,885,313.38/68,391.11 - Step 6: Final answer
x = 57,023.28
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.