Finding the Fourth Proportional to 68,691.24, 103,036.14 and 18,771.30
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Solution
The fourth proportional to 68,691.24, 103,036.14 and 18,771.30 is: 28,156.75
Step by Step Solution
- Step 1: Write the proportion equation
68,691.24 : 103,036.14 = 18,771.30 : x - Step 2: Convert to fraction form
68,691.24/103,036.14 = 18,771.30/x - Step 3: Cross multiply
68,691.24x = 103,036.14 × 18,771.30 - Step 4: Simplify right side
68,691.24x = 1,934,122,294.78 - Step 5: Solve for x
x = 1,934,122,294.78/68,691.24 - Step 6: Final answer
x = 28,156.75
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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.