Finding the Fourth Proportional to 84,691.75, 127,037.63 and 29,287.75
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Solution
The fourth proportional to 84,691.75, 127,037.63 and 29,287.75 is: 43,931.63
Step by Step Solution
- Step 1: Write the proportion equation
84,691.75 : 127,037.63 = 29,287.75 : x - Step 2: Convert to fraction form
84,691.75/127,037.63 = 29,287.75/x - Step 3: Cross multiply
84,691.75x = 127,037.63 × 29,287.75 - Step 4: Simplify right side
84,691.75x = 3,720,646,348.03 - Step 5: Solve for x
x = 3,720,646,348.03/84,691.75 - Step 6: Final answer
x = 43,931.63
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1.5x scale
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.