Finding the Fourth Proportional to 85,764.96, 128,610.98 and 35,129.08
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Solution
The fourth proportional to 85,764.96, 128,610.98 and 35,129.08 is: 52,678.68
Step by Step Solution
- Step 1: Write the proportion equation
85,764.96 : 128,610.98 = 35,129.08 : x - Step 2: Convert to fraction form
85,764.96/128,610.98 = 35,129.08/x - Step 3: Cross multiply
85,764.96x = 128,610.98 × 35,129.08 - Step 4: Simplify right side
85,764.96x = 4,517,984,762.24 - Step 5: Solve for x
x = 4,517,984,762.24/85,764.96 - Step 6: Final answer
x = 52,678.68
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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.