Finding the Fourth Proportional to 87,115.76, 130,661.34 and 27,943.73
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Solution
The fourth proportional to 87,115.76, 130,661.34 and 27,943.73 is: 41,911.65
Step by Step Solution
- Step 1: Write the proportion equation
87,115.76 : 130,661.34 = 27,943.73 : x - Step 2: Convert to fraction form
87,115.76/130,661.34 = 27,943.73/x - Step 3: Cross multiply
87,115.76x = 130,661.34 × 27,943.73 - Step 4: Simplify right side
87,115.76x = 3,651,165,206.40 - Step 5: Solve for x
x = 3,651,165,206.40/87,115.76 - Step 6: Final answer
x = 41,911.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.