Finding the Fourth Proportional to 85,722.57, 128,592.36 and 29,555.37
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Solution
The fourth proportional to 85,722.57, 128,592.36 and 29,555.37 is: 44,335.99
Step by Step Solution
- Step 1: Write the proportion equation
85,722.57 : 128,592.36 = 29,555.37 : x - Step 2: Convert to fraction form
85,722.57/128,592.36 = 29,555.37/x - Step 3: Cross multiply
85,722.57x = 128,592.36 × 29,555.37 - Step 4: Simplify right side
85,722.57x = 3,800,594,778.97 - Step 5: Solve for x
x = 3,800,594,778.97/85,722.57 - Step 6: Final answer
x = 44,335.99
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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.