Finding the Fourth Proportional to 84,440.81, 126,661.34 and 21,260.95
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Solution
The fourth proportional to 84,440.81, 126,661.34 and 21,260.95 is: 31,891.45
Step by Step Solution
- Step 1: Write the proportion equation
84,440.81 : 126,661.34 = 21,260.95 : x - Step 2: Convert to fraction form
84,440.81/126,661.34 = 21,260.95/x - Step 3: Cross multiply
84,440.81x = 126,661.34 × 21,260.95 - Step 4: Simplify right side
84,440.81x = 2,692,940,153.17 - Step 5: Solve for x
x = 2,692,940,153.17/84,440.81 - Step 6: Final answer
x = 31,891.45
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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.