Finding the Fourth Proportional to 85,833.14, 128,755.35 and 29,678.67
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Solution
The fourth proportional to 85,833.14, 128,755.35 and 29,678.67 is: 44,519.96
Step by Step Solution
- Step 1: Write the proportion equation
85,833.14 : 128,755.35 = 29,678.67 : x - Step 2: Convert to fraction form
85,833.14/128,755.35 = 29,678.67/x - Step 3: Cross multiply
85,833.14x = 128,755.35 × 29,678.67 - Step 4: Simplify right side
85,833.14x = 3,821,287,543.38 - Step 5: Solve for x
x = 3,821,287,543.38/85,833.14 - Step 6: Final answer
x = 44,519.96
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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.