Finding the Fourth Proportional to 67,225.31, 100,840.76 and 19,840.42
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Solution
The fourth proportional to 67,225.31, 100,840.76 and 19,840.42 is: 29,761.45
Step by Step Solution
- Step 1: Write the proportion equation
67,225.31 : 100,840.76 = 19,840.42 : x - Step 2: Convert to fraction form
67,225.31/100,840.76 = 19,840.42/x - Step 3: Cross multiply
67,225.31x = 100,840.76 × 19,840.42 - Step 4: Simplify right side
67,225.31x = 2,000,722,677.14 - Step 5: Solve for x
x = 2,000,722,677.14/67,225.31 - Step 6: Final answer
x = 29,761.45
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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.