Finding the Fourth Proportional to 85,823.81, 128,771.25 and 46,334.49
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Solution
The fourth proportional to 85,823.81, 128,771.25 and 46,334.49 is: 69,520.92
Step by Step Solution
- Step 1: Write the proportion equation
85,823.81 : 128,771.25 = 46,334.49 : x - Step 2: Convert to fraction form
85,823.81/128,771.25 = 46,334.49/x - Step 3: Cross multiply
85,823.81x = 128,771.25 × 46,334.49 - Step 4: Simplify right side
85,823.81x = 5,966,550,195.41 - Step 5: Solve for x
x = 5,966,550,195.41/85,823.81 - Step 6: Final answer
x = 69,520.92
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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.