Finding the Fourth Proportional to 81,437.12, 122,153.94 and 22,272.80
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Solution
The fourth proportional to 81,437.12, 122,153.94 and 22,272.80 is: 33,408.72
Step by Step Solution
- Step 1: Write the proportion equation
81,437.12 : 122,153.94 = 22,272.80 : x - Step 2: Convert to fraction form
81,437.12/122,153.94 = 22,272.80/x - Step 3: Cross multiply
81,437.12x = 122,153.94 × 22,272.80 - Step 4: Simplify right side
81,437.12x = 2,720,709,664.06 - Step 5: Solve for x
x = 2,720,709,664.06/81,437.12 - Step 6: Final answer
x = 33,408.72
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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.