Finding the Fourth Proportional to 85,734.09, 128,798.24 and 60,491.70
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Solution
The fourth proportional to 85,734.09, 128,798.24 and 60,491.70 is: 90,876.62
Step by Step Solution
- Step 1: Write the proportion equation
85,734.09 : 128,798.24 = 60,491.70 : x - Step 2: Convert to fraction form
85,734.09/128,798.24 = 60,491.70/x - Step 3: Cross multiply
85,734.09x = 128,798.24 × 60,491.70 - Step 4: Simplify right side
85,734.09x = 7,791,224,192.15 - Step 5: Solve for x
x = 7,791,224,192.15/85,734.09 - Step 6: Final answer
x = 90,876.62
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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.