Finding the Fourth Proportional to 76,818.62, 115,148.75 and 29,420.78
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Solution
The fourth proportional to 76,818.62, 115,148.75 and 29,420.78 is: 44,100.84
Step by Step Solution
- Step 1: Write the proportion equation
76,818.62 : 115,148.75 = 29,420.78 : x - Step 2: Convert to fraction form
76,818.62/115,148.75 = 29,420.78/x - Step 3: Cross multiply
76,818.62x = 115,148.75 × 29,420.78 - Step 4: Simplify right side
76,818.62x = 3,387,765,318.18 - Step 5: Solve for x
x = 3,387,765,318.18/76,818.62 - Step 6: Final answer
x = 44,100.84
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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.