Finding the Fourth Proportional to 77,239.76, 115,868.28 and 21,840.08
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Solution
The fourth proportional to 77,239.76, 115,868.28 and 21,840.08 is: 32,762.56
Step by Step Solution
- Step 1: Write the proportion equation
77,239.76 : 115,868.28 = 21,840.08 : x - Step 2: Convert to fraction form
77,239.76/115,868.28 = 21,840.08/x - Step 3: Cross multiply
77,239.76x = 115,868.28 × 21,840.08 - Step 4: Simplify right side
77,239.76x = 2,530,572,504.66 - Step 5: Solve for x
x = 2,530,572,504.66/77,239.76 - Step 6: Final answer
x = 32,762.56
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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.