Finding the Fourth Proportional to 66,956.63, 100,438.99 and 20,209.91
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Solution
The fourth proportional to 66,956.63, 100,438.99 and 20,209.91 is: 30,316.08
Step by Step Solution
- Step 1: Write the proportion equation
66,956.63 : 100,438.99 = 20,209.91 : x - Step 2: Convert to fraction form
66,956.63/100,438.99 = 20,209.91/x - Step 3: Cross multiply
66,956.63x = 100,438.99 × 20,209.91 - Step 4: Simplify right side
66,956.63x = 2,029,862,395.67 - Step 5: Solve for x
x = 2,029,862,395.67/66,956.63 - Step 6: Final answer
x = 30,316.08
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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.