Finding the Fourth Proportional to 83,538.73, 115,276.33 and 47,721.75
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Solution
The fourth proportional to 83,538.73, 115,276.33 and 47,721.75 is: 65,851.95
Step by Step Solution
- Step 1: Write the proportion equation
83,538.73 : 115,276.33 = 47,721.75 : x - Step 2: Convert to fraction form
83,538.73/115,276.33 = 47,721.75/x - Step 3: Cross multiply
83,538.73x = 115,276.33 × 47,721.75 - Step 4: Simplify right side
83,538.73x = 5,501,188,201.18 - Step 5: Solve for x
x = 5,501,188,201.18/83,538.73 - Step 6: Final answer
x = 65,851.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.