Finding the Fourth Proportional to 80,639.74, 120,961.28 and 29,346.65
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Solution
The fourth proportional to 80,639.74, 120,961.28 and 29,346.65 is: 44,020.58
Step by Step Solution
- Step 1: Write the proportion equation
80,639.74 : 120,961.28 = 29,346.65 : x - Step 2: Convert to fraction form
80,639.74/120,961.28 = 29,346.65/x - Step 3: Cross multiply
80,639.74x = 120,961.28 × 29,346.65 - Step 4: Simplify right side
80,639.74x = 3,549,808,347.71 - Step 5: Solve for x
x = 3,549,808,347.71/80,639.74 - Step 6: Final answer
x = 44,020.58
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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.