Finding the Fourth Proportional to 103,766.84, 155,634.76 and 28,879.18
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Solution
The fourth proportional to 103,766.84, 155,634.76 and 28,879.18 is: 43,314.45
Step by Step Solution
- Step 1: Write the proportion equation
103,766.84 : 155,634.76 = 28,879.18 : x - Step 2: Convert to fraction form
103,766.84/155,634.76 = 28,879.18/x - Step 3: Cross multiply
103,766.84x = 155,634.76 × 28,879.18 - Step 4: Simplify right side
103,766.84x = 4,494,603,895.31 - Step 5: Solve for x
x = 4,494,603,895.31/103,766.84 - Step 6: Final answer
x = 43,314.45
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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.