Finding the Fourth Proportional to 68,889.12, 103,309.36 and 22,126.20
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Solution
The fourth proportional to 68,889.12, 103,309.36 and 22,126.20 is: 33,181.49
Step by Step Solution
- Step 1: Write the proportion equation
68,889.12 : 103,309.36 = 22,126.20 : x - Step 2: Convert to fraction form
68,889.12/103,309.36 = 22,126.20/x - Step 3: Cross multiply
68,889.12x = 103,309.36 × 22,126.20 - Step 4: Simplify right side
68,889.12x = 2,285,843,561.23 - Step 5: Solve for x
x = 2,285,843,561.23/68,889.12 - Step 6: Final answer
x = 33,181.49
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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.