Finding the Fourth Proportional to 87,129.38, 120,243.38 and 48,901.02
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Solution
The fourth proportional to 87,129.38, 120,243.38 and 48,901.02 is: 67,486.12
Step by Step Solution
- Step 1: Write the proportion equation
87,129.38 : 120,243.38 = 48,901.02 : x - Step 2: Convert to fraction form
87,129.38/120,243.38 = 48,901.02/x - Step 3: Cross multiply
87,129.38x = 120,243.38 × 48,901.02 - Step 4: Simplify right side
87,129.38x = 5,880,023,930.25 - Step 5: Solve for x
x = 5,880,023,930.25/87,129.38 - Step 6: Final answer
x = 67,486.12
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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.