Finding the Fourth Proportional to 87,506.58, 120,717.06 and 57,278.58
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Solution
The fourth proportional to 87,506.58, 120,717.06 and 57,278.58 is: 79,016.94
Step by Step Solution
- Step 1: Write the proportion equation
87,506.58 : 120,717.06 = 57,278.58 : x - Step 2: Convert to fraction form
87,506.58/120,717.06 = 57,278.58/x - Step 3: Cross multiply
87,506.58x = 120,717.06 × 57,278.58 - Step 4: Simplify right side
87,506.58x = 6,914,501,778.57 - Step 5: Solve for x
x = 6,914,501,778.57/87,506.58 - Step 6: Final answer
x = 79,016.94
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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.