Finding the Fourth Proportional to 85,817.36, 128,747.88 and 26,661.44
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Solution
The fourth proportional to 85,817.36, 128,747.88 and 26,661.44 is: 39,998.95
Step by Step Solution
- Step 1: Write the proportion equation
85,817.36 : 128,747.88 = 26,661.44 : x - Step 2: Convert to fraction form
85,817.36/128,747.88 = 26,661.44/x - Step 3: Cross multiply
85,817.36x = 128,747.88 × 26,661.44 - Step 4: Simplify right side
85,817.36x = 3,432,603,877.75 - Step 5: Solve for x
x = 3,432,603,877.75/85,817.36 - Step 6: Final answer
x = 39,998.95
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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.