Finding the Fourth Proportional to 87,438.26, 120,645.21 and 51,609.06
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Solution
The fourth proportional to 87,438.26, 120,645.21 and 51,609.06 is: 71,208.94
Step by Step Solution
- Step 1: Write the proportion equation
87,438.26 : 120,645.21 = 51,609.06 : x - Step 2: Convert to fraction form
87,438.26/120,645.21 = 51,609.06/x - Step 3: Cross multiply
87,438.26x = 120,645.21 × 51,609.06 - Step 4: Simplify right side
87,438.26x = 6,226,386,075.14 - Step 5: Solve for x
x = 6,226,386,075.14/87,438.26 - Step 6: Final answer
x = 71,208.94
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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.