Finding the Fourth Proportional to 84,313.70, 126,470.55 and 80,425.70
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Solution
The fourth proportional to 84,313.70, 126,470.55 and 80,425.70 is: 120,638.55
Step by Step Solution
- Step 1: Write the proportion equation
84,313.70 : 126,470.55 = 80,425.70 : x - Step 2: Convert to fraction form
84,313.70/126,470.55 = 80,425.70/x - Step 3: Cross multiply
84,313.70x = 126,470.55 × 80,425.70 - Step 4: Simplify right side
84,313.70x = 10,171,482,513.14 - Step 5: Solve for x
x = 10,171,482,513.14/84,313.70 - Step 6: Final answer
x = 120,638.55
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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.