Finding the Fourth Proportional to 81,576,201.20, 122,364,301.80 and 61,420,809.20
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Solution
The fourth proportional to 81,576,201.20, 122,364,301.80 and 61,420,809.20 is: 92,131,213.80
Step by Step Solution
- Step 1: Write the proportion equation
81,576,201.20 : 122,364,301.80 = 61,420,809.20 : x - Step 2: Convert to fraction form
81,576,201.20/122,364,301.80 = 61,420,809.20/x - Step 3: Cross multiply
81,576,201.20x = 122,364,301.80 × 61,420,809.20 - Step 4: Simplify right side
81,576,201.20x = 7,515,714,433,749,017 - Step 5: Solve for x
x = 7,515,714,433,749,017/81,576,201.20 - Step 6: Final answer
x = 92,131,213.80
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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.