Finding the Fourth Proportional to 75,072.87, 103,638.07 and 43,235.62
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Solution
The fourth proportional to 75,072.87, 103,638.07 and 43,235.62 is: 59,686.76
Step by Step Solution
- Step 1: Write the proportion equation
75,072.87 : 103,638.07 = 43,235.62 : x - Step 2: Convert to fraction form
75,072.87/103,638.07 = 43,235.62/x - Step 3: Cross multiply
75,072.87x = 103,638.07 × 43,235.62 - Step 4: Simplify right side
75,072.87x = 4,480,856,212.05 - Step 5: Solve for x
x = 4,480,856,212.05/75,072.87 - Step 6: Final answer
x = 59,686.76
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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.