Finding the Fourth Proportional to 72,874.75, 100,610.90 and 47,767.99
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Solution
The fourth proportional to 72,874.75, 100,610.90 and 47,767.99 is: 65,948.50
Step by Step Solution
- Step 1: Write the proportion equation
72,874.75 : 100,610.90 = 47,767.99 : x - Step 2: Convert to fraction form
72,874.75/100,610.90 = 47,767.99/x - Step 3: Cross multiply
72,874.75x = 100,610.90 × 47,767.99 - Step 4: Simplify right side
72,874.75x = 4,805,980,465.09 - Step 5: Solve for x
x = 4,805,980,465.09/72,874.75 - Step 6: Final answer
x = 65,948.50
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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.