Finding the Fourth Proportional to 76,840.92, 115,267.32 and 29,478.69
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Solution
The fourth proportional to 76,840.92, 115,267.32 and 29,478.69 is: 44,220.31
Step by Step Solution
- Step 1: Write the proportion equation
76,840.92 : 115,267.32 = 29,478.69 : x - Step 2: Convert to fraction form
76,840.92/115,267.32 = 29,478.69/x - Step 3: Cross multiply
76,840.92x = 115,267.32 × 29,478.69 - Step 4: Simplify right side
76,840.92x = 3,397,929,593.41 - Step 5: Solve for x
x = 3,397,929,593.41/76,840.92 - Step 6: Final answer
x = 44,220.31
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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.