Finding the Fourth Proportional to 83,542.08, 115,287.84 and 47,743.20
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Solution
The fourth proportional to 83,542.08, 115,287.84 and 47,743.20 is: 65,885.48
Step by Step Solution
- Step 1: Write the proportion equation
83,542.08 : 115,287.84 = 47,743.20 : x - Step 2: Convert to fraction form
83,542.08/115,287.84 = 47,743.20/x - Step 3: Cross multiply
83,542.08x = 115,287.84 × 47,743.20 - Step 4: Simplify right side
83,542.08x = 5,504,210,402.69 - Step 5: Solve for x
x = 5,504,210,402.69/83,542.08 - Step 6: Final answer
x = 65,885.48
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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.