Finding the Fourth Proportional to 83,722.10, 125,583.15 and 68,947.70
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Solution
The fourth proportional to 83,722.10, 125,583.15 and 68,947.70 is: 103,421.55
Step by Step Solution
- Step 1: Write the proportion equation
83,722.10 : 125,583.15 = 68,947.70 : x - Step 2: Convert to fraction form
83,722.10/125,583.15 = 68,947.70/x - Step 3: Cross multiply
83,722.10x = 125,583.15 × 68,947.70 - Step 4: Simplify right side
83,722.10x = 8,658,669,351.26 - Step 5: Solve for x
x = 8,658,669,351.26/83,722.10 - Step 6: Final answer
x = 103,421.55
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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.