Finding the Fourth Proportional to 71,355.10, 106,903.05 and 43,620.70
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Solution
The fourth proportional to 71,355.10, 106,903.05 and 43,620.70 is: 65,351.82
Step by Step Solution
- Step 1: Write the proportion equation
71,355.10 : 106,903.05 = 43,620.70 : x - Step 2: Convert to fraction form
71,355.10/106,903.05 = 43,620.70/x - Step 3: Cross multiply
71,355.10x = 106,903.05 × 43,620.70 - Step 4: Simplify right side
71,355.10x = 4,663,185,873.14 - Step 5: Solve for x
x = 4,663,185,873.14/71,355.10 - Step 6: Final answer
x = 65,351.82
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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.