Finding the Fourth Proportional to 76,212.36, 105,224.40 and 47,575.62
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Solution
The fourth proportional to 76,212.36, 105,224.40 and 47,575.62 is: 65,686.41
Step by Step Solution
- Step 1: Write the proportion equation
76,212.36 : 105,224.40 = 47,575.62 : x - Step 2: Convert to fraction form
76,212.36/105,224.40 = 47,575.62/x - Step 3: Cross multiply
76,212.36x = 105,224.40 × 47,575.62 - Step 4: Simplify right side
76,212.36x = 5,006,116,069.13 - Step 5: Solve for x
x = 5,006,116,069.13/76,212.36 - Step 6: Final answer
x = 65,686.41
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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.