Finding the Fourth Proportional to 81,802.05, 122,768.70 and 42,370.44
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Solution
The fourth proportional to 81,802.05, 122,768.70 and 42,370.44 is: 63,589.65
Step by Step Solution
- Step 1: Write the proportion equation
81,802.05 : 122,768.70 = 42,370.44 : x - Step 2: Convert to fraction form
81,802.05/122,768.70 = 42,370.44/x - Step 3: Cross multiply
81,802.05x = 122,768.70 × 42,370.44 - Step 4: Simplify right side
81,802.05x = 5,201,763,837.23 - Step 5: Solve for x
x = 5,201,763,837.23/81,802.05 - Step 6: Final answer
x = 63,589.65
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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.