Finding the Fourth Proportional to 115,778.56, 173,671.44 and 39,876.28
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Solution
The fourth proportional to 115,778.56, 173,671.44 and 39,876.28 is: 59,815.66
Step by Step Solution
- Step 1: Write the proportion equation
115,778.56 : 173,671.44 = 39,876.28 : x - Step 2: Convert to fraction form
115,778.56/173,671.44 = 39,876.28/x - Step 3: Cross multiply
115,778.56x = 173,671.44 × 39,876.28 - Step 4: Simplify right side
115,778.56x = 6,925,370,969.44 - Step 5: Solve for x
x = 6,925,370,969.44/115,778.56 - Step 6: Final answer
x = 59,815.66
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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.