Finding the Fourth Proportional to 83,128.24, 114,714.12 and 47,319.76
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Solution
The fourth proportional to 83,128.24, 114,714.12 and 47,319.76 is: 65,299.65
Step by Step Solution
- Step 1: Write the proportion equation
83,128.24 : 114,714.12 = 47,319.76 : x - Step 2: Convert to fraction form
83,128.24/114,714.12 = 47,319.76/x - Step 3: Cross multiply
83,128.24x = 114,714.12 × 47,319.76 - Step 4: Simplify right side
83,128.24x = 5,428,244,627.01 - Step 5: Solve for x
x = 5,428,244,627.01/83,128.24 - Step 6: Final answer
x = 65,299.65
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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.