Finding the Fourth Proportional to 68,673.80, 103,010.70 and 31,251.80
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Solution
The fourth proportional to 68,673.80, 103,010.70 and 31,251.80 is: 46,877.70
Step by Step Solution
- Step 1: Write the proportion equation
68,673.80 : 103,010.70 = 31,251.80 : x - Step 2: Convert to fraction form
68,673.80/103,010.70 = 31,251.80/x - Step 3: Cross multiply
68,673.80x = 103,010.70 × 31,251.80 - Step 4: Simplify right side
68,673.80x = 3,219,269,794.26 - Step 5: Solve for x
x = 3,219,269,794.26/68,673.80 - Step 6: Final answer
x = 46,877.70
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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.