Finding the Fourth Proportional to 76,786.64, 105,963.96 and 42,794.99
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Solution
The fourth proportional to 76,786.64, 105,963.96 and 42,794.99 is: 59,056.19
Step by Step Solution
- Step 1: Write the proportion equation
76,786.64 : 105,963.96 = 42,794.99 : x - Step 2: Convert to fraction form
76,786.64/105,963.96 = 42,794.99/x - Step 3: Cross multiply
76,786.64x = 105,963.96 × 42,794.99 - Step 4: Simplify right side
76,786.64x = 4,534,726,608.56 - Step 5: Solve for x
x = 4,534,726,608.56/76,786.64 - Step 6: Final answer
x = 59,056.19
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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.