Finding the Fourth Proportional to 80,731.80, 121,097.70 and 51,207.30
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Solution
The fourth proportional to 80,731.80, 121,097.70 and 51,207.30 is: 76,810.95
Step by Step Solution
- Step 1: Write the proportion equation
80,731.80 : 121,097.70 = 51,207.30 : x - Step 2: Convert to fraction form
80,731.80/121,097.70 = 51,207.30/x - Step 3: Cross multiply
80,731.80x = 121,097.70 × 51,207.30 - Step 4: Simplify right side
80,731.80x = 6,201,086,253.21 - Step 5: Solve for x
x = 6,201,086,253.21/80,731.80 - Step 6: Final answer
x = 76,810.95
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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.