Finding the Fourth Proportional to 87,761.72, 121,076.72 and 51,938.68
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Solution
The fourth proportional to 87,761.72, 121,076.72 and 51,938.68 is: 71,654.99
Step by Step Solution
- Step 1: Write the proportion equation
87,761.72 : 121,076.72 = 51,938.68 : x - Step 2: Convert to fraction form
87,761.72/121,076.72 = 51,938.68/x - Step 3: Cross multiply
87,761.72x = 121,076.72 × 51,938.68 - Step 4: Simplify right side
87,761.72x = 6,288,565,015.53 - Step 5: Solve for x
x = 6,288,565,015.53/87,761.72 - Step 6: Final answer
x = 71,654.99
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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.