Finding the Fourth Proportional to 68,611.80, 102,917.70 and 19,363.80
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Solution
The fourth proportional to 68,611.80, 102,917.70 and 19,363.80 is: 29,045.70
Step by Step Solution
- Step 1: Write the proportion equation
68,611.80 : 102,917.70 = 19,363.80 : x - Step 2: Convert to fraction form
68,611.80/102,917.70 = 19,363.80/x - Step 3: Cross multiply
68,611.80x = 102,917.70 × 19,363.80 - Step 4: Simplify right side
68,611.80x = 1,992,877,759.26 - Step 5: Solve for x
x = 1,992,877,759.26/68,611.80 - Step 6: Final answer
x = 29,045.70
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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.