Finding the Fourth Proportional to 85,518.38, 128,277.56 and 26,354.05
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Solution
The fourth proportional to 85,518.38, 128,277.56 and 26,354.05 is: 39,531.07
Step by Step Solution
- Step 1: Write the proportion equation
85,518.38 : 128,277.56 = 26,354.05 : x - Step 2: Convert to fraction form
85,518.38/128,277.56 = 26,354.05/x - Step 3: Cross multiply
85,518.38x = 128,277.56 × 26,354.05 - Step 4: Simplify right side
85,518.38x = 3,380,632,975.31 - Step 5: Solve for x
x = 3,380,632,975.31/85,518.38 - Step 6: Final answer
x = 39,531.07
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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.