Finding the Fourth Proportional to 70,219.62, 105,313.84 and 20,288.79
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Solution
The fourth proportional to 70,219.62, 105,313.84 and 20,288.79 is: 30,428.68
Step by Step Solution
- Step 1: Write the proportion equation
70,219.62 : 105,313.84 = 20,288.79 : x - Step 2: Convert to fraction form
70,219.62/105,313.84 = 20,288.79/x - Step 3: Cross multiply
70,219.62x = 105,313.84 × 20,288.79 - Step 4: Simplify right side
70,219.62x = 2,136,690,333.13 - Step 5: Solve for x
x = 2,136,690,333.13/70,219.62 - Step 6: Final answer
x = 30,428.68
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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.