Finding the Fourth Proportional to 87,719.76, 131,599.08 and 40,947.12
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Solution
The fourth proportional to 87,719.76, 131,599.08 and 40,947.12 is: 61,429.75
Step by Step Solution
- Step 1: Write the proportion equation
87,719.76 : 131,599.08 = 40,947.12 : x - Step 2: Convert to fraction form
87,719.76/131,599.08 = 40,947.12/x - Step 3: Cross multiply
87,719.76x = 131,599.08 × 40,947.12 - Step 4: Simplify right side
87,719.76x = 5,388,603,320.65 - Step 5: Solve for x
x = 5,388,603,320.65/87,719.76 - Step 6: Final answer
x = 61,429.75
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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.