Finding the Fourth Proportional to 87,816.07, 121,189.12 and 53,817.99
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Solution
The fourth proportional to 87,816.07, 121,189.12 and 53,817.99 is: 74,270.63
Step by Step Solution
- Step 1: Write the proportion equation
87,816.07 : 121,189.12 = 53,817.99 : x - Step 2: Convert to fraction form
87,816.07/121,189.12 = 53,817.99/x - Step 3: Cross multiply
87,816.07x = 121,189.12 × 53,817.99 - Step 4: Simplify right side
87,816.07x = 6,522,154,765.91 - Step 5: Solve for x
x = 6,522,154,765.91/87,816.07 - Step 6: Final answer
x = 74,270.63
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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.