Finding the Fourth Proportional to 71,242.20, 106,863.30 and 29,683.80
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Solution
The fourth proportional to 71,242.20, 106,863.30 and 29,683.80 is: 44,525.70
Step by Step Solution
- Step 1: Write the proportion equation
71,242.20 : 106,863.30 = 29,683.80 : x - Step 2: Convert to fraction form
71,242.20/106,863.30 = 29,683.80/x - Step 3: Cross multiply
71,242.20x = 106,863.30 × 29,683.80 - Step 4: Simplify right side
71,242.20x = 3,172,108,824.54 - Step 5: Solve for x
x = 3,172,108,824.54/71,242.20 - Step 6: Final answer
x = 44,525.70
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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.