Finding the Fourth Proportional to 85,621.29, 128,461.92 and 26,456.96
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Solution
The fourth proportional to 85,621.29, 128,461.92 and 26,456.96 is: 39,694.70
Step by Step Solution
- Step 1: Write the proportion equation
85,621.29 : 128,461.92 = 26,456.96 : x - Step 2: Convert to fraction form
85,621.29/128,461.92 = 26,456.96/x - Step 3: Cross multiply
85,621.29x = 128,461.92 × 26,456.96 - Step 4: Simplify right side
85,621.29x = 3,398,711,236.65 - Step 5: Solve for x
x = 3,398,711,236.65/85,621.29 - Step 6: Final answer
x = 39,694.70
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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.