Finding the Fourth Proportional to 85,481.30, 128,181.68 and 49,952.88
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Solution
The fourth proportional to 85,481.30, 128,181.68 and 49,952.88 is: 74,905.79
Step by Step Solution
- Step 1: Write the proportion equation
85,481.30 : 128,181.68 = 49,952.88 : x - Step 2: Convert to fraction form
85,481.30/128,181.68 = 49,952.88/x - Step 3: Cross multiply
85,481.30x = 128,181.68 × 49,952.88 - Step 4: Simplify right side
85,481.30x = 6,403,044,079.24 - Step 5: Solve for x
x = 6,403,044,079.24/85,481.30 - Step 6: Final answer
x = 74,905.79
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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.