Finding the Fourth Proportional to 86,890.24, 130,354.80 and 27,729.28
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Solution
The fourth proportional to 86,890.24, 130,354.80 and 27,729.28 is: 41,600.12
Step by Step Solution
- Step 1: Write the proportion equation
86,890.24 : 130,354.80 = 27,729.28 : x - Step 2: Convert to fraction form
86,890.24/130,354.80 = 27,729.28/x - Step 3: Cross multiply
86,890.24x = 130,354.80 × 27,729.28 - Step 4: Simplify right side
86,890.24x = 3,614,644,748.54 - Step 5: Solve for x
x = 3,614,644,748.54/86,890.24 - Step 6: Final answer
x = 41,600.12
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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.