Finding the Fourth Proportional to 87,812.68, 121,173.80 and 51,996.64
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Solution
The fourth proportional to 87,812.68, 121,173.80 and 51,996.64 is: 71,750.80
Step by Step Solution
- Step 1: Write the proportion equation
87,812.68 : 121,173.80 = 51,996.64 : x - Step 2: Convert to fraction form
87,812.68/121,173.80 = 51,996.64/x - Step 3: Cross multiply
87,812.68x = 121,173.80 × 51,996.64 - Step 4: Simplify right side
87,812.68x = 6,300,630,456.03 - Step 5: Solve for x
x = 6,300,630,456.03/87,812.68 - Step 6: Final answer
x = 71,750.80
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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.