Finding the Fourth Proportional to 75,536,765.81, 113,305,142.37 and 20,949,350.38
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Solution
The fourth proportional to 75,536,765.81, 113,305,142.37 and 20,949,350.38 is: 31,424,023.81
Step by Step Solution
- Step 1: Write the proportion equation
75,536,765.81 : 113,305,142.37 = 20,949,350.38 : x - Step 2: Convert to fraction form
75,536,765.81/113,305,142.37 = 20,949,350.38/x - Step 3: Cross multiply
75,536,765.81x = 113,305,142.37 × 20,949,350.38 - Step 4: Simplify right side
75,536,765.81x = 2,373,669,127,360,880 - Step 5: Solve for x
x = 2,373,669,127,360,880/75,536,765.81 - Step 6: Final answer
x = 31,424,023.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.