Finding the Fourth Proportional to 70,768.20, 106,121.58 and 21,508.68
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Solution
The fourth proportional to 70,768.20, 106,121.58 and 21,508.68 is: 32,253.68
Step by Step Solution
- Step 1: Write the proportion equation
70,768.20 : 106,121.58 = 21,508.68 : x - Step 2: Convert to fraction form
70,768.20/106,121.58 = 21,508.68/x - Step 3: Cross multiply
70,768.20x = 106,121.58 × 21,508.68 - Step 4: Simplify right side
70,768.20x = 2,282,535,105.31 - Step 5: Solve for x
x = 2,282,535,105.31/70,768.20 - Step 6: Final answer
x = 32,253.68
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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.