Finding the Fourth Proportional to 84,487.68, 126,765.36 and 31,911.84
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Solution
The fourth proportional to 84,487.68, 126,765.36 and 31,911.84 is: 47,880.54
Step by Step Solution
- Step 1: Write the proportion equation
84,487.68 : 126,765.36 = 31,911.84 : x - Step 2: Convert to fraction form
84,487.68/126,765.36 = 31,911.84/x - Step 3: Cross multiply
84,487.68x = 126,765.36 × 31,911.84 - Step 4: Simplify right side
84,487.68x = 4,045,315,885.86 - Step 5: Solve for x
x = 4,045,315,885.86/84,487.68 - Step 6: Final answer
x = 47,880.54
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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.