Finding the Fourth Proportional to 78,124.06, 107,817.83 and 44,138.79
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Solution
The fourth proportional to 78,124.06, 107,817.83 and 44,138.79 is: 60,915.28
Step by Step Solution
- Step 1: Write the proportion equation
78,124.06 : 107,817.83 = 44,138.79 : x - Step 2: Convert to fraction form
78,124.06/107,817.83 = 44,138.79/x - Step 3: Cross multiply
78,124.06x = 107,817.83 × 44,138.79 - Step 4: Simplify right side
78,124.06x = 4,758,948,749.73 - Step 5: Solve for x
x = 4,758,948,749.73/78,124.06 - Step 6: Final answer
x = 60,915.28
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.