Finding the Fourth Proportional to 80,984.71, 121,479.92 and 21,821.81
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Solution
The fourth proportional to 80,984.71, 121,479.92 and 21,821.81 is: 32,733.48
Step by Step Solution
- Step 1: Write the proportion equation
80,984.71 : 121,479.92 = 21,821.81 : x - Step 2: Convert to fraction form
80,984.71/121,479.92 = 21,821.81/x - Step 3: Cross multiply
80,984.71x = 121,479.92 × 21,821.81 - Step 4: Simplify right side
80,984.71x = 2,650,911,098.38 - Step 5: Solve for x
x = 2,650,911,098.38/80,984.71 - Step 6: Final answer
x = 32,733.48
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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.