Finding the Fourth Proportional to 71,021.80, 106,532.70 and 58,337.20
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Solution
The fourth proportional to 71,021.80, 106,532.70 and 58,337.20 is: 87,505.80
Step by Step Solution
- Step 1: Write the proportion equation
71,021.80 : 106,532.70 = 58,337.20 : x - Step 2: Convert to fraction form
71,021.80/106,532.70 = 58,337.20/x - Step 3: Cross multiply
71,021.80x = 106,532.70 × 58,337.20 - Step 4: Simplify right side
71,021.80x = 6,214,819,426.44 - Step 5: Solve for x
x = 6,214,819,426.44/71,021.80 - Step 6: Final answer
x = 87,505.80
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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.