Finding the Fourth Proportional to 71,869.42, 107,758.94 and 21,932.92
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Solution
The fourth proportional to 71,869.42, 107,758.94 and 21,932.92 is: 32,885.59
Step by Step Solution
- Step 1: Write the proportion equation
71,869.42 : 107,758.94 = 21,932.92 : x - Step 2: Convert to fraction form
71,869.42/107,758.94 = 21,932.92/x - Step 3: Cross multiply
71,869.42x = 107,758.94 × 21,932.92 - Step 4: Simplify right side
71,869.42x = 2,363,468,210.30 - Step 5: Solve for x
x = 2,363,468,210.30/71,869.42 - Step 6: Final answer
x = 32,885.59
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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.