Finding the Third Proportional to 42,939 and 87,090
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Solution
The third proportional to 42,939 and 87,090 is: 176,638.21
Step by Step Solution
- Step 1: Write the proportion equation
42,939 : 87,090 = 87,090 : x - Step 2: Convert to fraction form
42,939/87,090 = 87,090/x - Step 3: Cross multiply
42,939x = 87,090 × 87,090 - Step 4: Simplify right side
42,939x = 7,584,668,100 - Step 5: Solve for x
x = 7,584,668,100/42,939 - Step 6: Final answer
x = 176,638.21
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Why These Related Problems?
These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.