Finding the Fourth Proportional to 87,896.28, 121,288.19 and 49,126.95
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Solution
The fourth proportional to 87,896.28, 121,288.19 and 49,126.95 is: 67,790.34
Step by Step Solution
- Step 1: Write the proportion equation
87,896.28 : 121,288.19 = 49,126.95 : x - Step 2: Convert to fraction form
87,896.28/121,288.19 = 49,126.95/x - Step 3: Cross multiply
87,896.28x = 121,288.19 × 49,126.95 - Step 4: Simplify right side
87,896.28x = 5,958,518,600.09 - Step 5: Solve for x
x = 5,958,518,600.09/87,896.28 - Step 6: Final answer
x = 67,790.34
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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.