Finding the Fourth Proportional to 85,943.07, 128,782.74 and 35,995.84
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Solution
The fourth proportional to 85,943.07, 128,782.74 and 35,995.84 is: 53,938.52
Step by Step Solution
- Step 1: Write the proportion equation
85,943.07 : 128,782.74 = 35,995.84 : x - Step 2: Convert to fraction form
85,943.07/128,782.74 = 35,995.84/x - Step 3: Cross multiply
85,943.07x = 128,782.74 × 35,995.84 - Step 4: Simplify right side
85,943.07x = 4,635,642,259.89 - Step 5: Solve for x
x = 4,635,642,259.89/85,943.07 - Step 6: Final answer
x = 53,938.52
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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.