Finding the Fourth Proportional to 81,937.20, 122,905.80 and 26,533.20
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Solution
The fourth proportional to 81,937.20, 122,905.80 and 26,533.20 is: 39,799.80
Step by Step Solution
- Step 1: Write the proportion equation
81,937.20 : 122,905.80 = 26,533.20 : x - Step 2: Convert to fraction form
81,937.20/122,905.80 = 26,533.20/x - Step 3: Cross multiply
81,937.20x = 122,905.80 × 26,533.20 - Step 4: Simplify right side
81,937.20x = 3,261,084,172.56 - Step 5: Solve for x
x = 3,261,084,172.56/81,937.20 - Step 6: Final answer
x = 39,799.80
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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.