Finding the Fourth Proportional to 86,482.15, 129,727.09 and 26,506.28
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Solution
The fourth proportional to 86,482.15, 129,727.09 and 26,506.28 is: 39,760.60
Step by Step Solution
- Step 1: Write the proportion equation
86,482.15 : 129,727.09 = 26,506.28 : x - Step 2: Convert to fraction form
86,482.15/129,727.09 = 26,506.28/x - Step 3: Cross multiply
86,482.15x = 129,727.09 × 26,506.28 - Step 4: Simplify right side
86,482.15x = 3,438,582,571.13 - Step 5: Solve for x
x = 3,438,582,571.13/86,482.15 - Step 6: Final answer
x = 39,760.60
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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.