Finding the Fourth Proportional to 87,758.13, 121,057.01 and 53,783.08
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Solution
The fourth proportional to 87,758.13, 121,057.01 and 53,783.08 is: 74,190.49
Step by Step Solution
- Step 1: Write the proportion equation
87,758.13 : 121,057.01 = 53,783.08 : x - Step 2: Convert to fraction form
87,758.13/121,057.01 = 53,783.08/x - Step 3: Cross multiply
87,758.13x = 121,057.01 × 53,783.08 - Step 4: Simplify right side
87,758.13x = 6,510,818,584.48 - Step 5: Solve for x
x = 6,510,818,584.48/87,758.13 - Step 6: Final answer
x = 74,190.49
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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.