Finding the Fourth Proportional to 81,533.52, 122,533.56 and 40,009.68
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Solution
The fourth proportional to 81,533.52, 122,533.56 and 40,009.68 is: 60,128.99
Step by Step Solution
- Step 1: Write the proportion equation
81,533.52 : 122,533.56 = 40,009.68 : x - Step 2: Convert to fraction form
81,533.52/122,533.56 = 40,009.68/x - Step 3: Cross multiply
81,533.52x = 122,533.56 × 40,009.68 - Step 4: Simplify right side
81,533.52x = 4,902,528,524.86 - Step 5: Solve for x
x = 4,902,528,524.86/81,533.52 - Step 6: Final answer
x = 60,128.99
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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.