Finding the Fourth Proportional to 81,295.14, 121,930.21 and 22,135.38
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Solution
The fourth proportional to 81,295.14, 121,930.21 and 22,135.38 is: 33,199.66
Step by Step Solution
- Step 1: Write the proportion equation
81,295.14 : 121,930.21 = 22,135.38 : x - Step 2: Convert to fraction form
81,295.14/121,930.21 = 22,135.38/x - Step 3: Cross multiply
81,295.14x = 121,930.21 × 22,135.38 - Step 4: Simplify right side
81,295.14x = 2,698,971,102.26 - Step 5: Solve for x
x = 2,698,971,102.26/81,295.14 - Step 6: Final answer
x = 33,199.66
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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.