Finding the Fourth Proportional to 81,372.08, 122,262.60 and 51,803.12
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Solution
The fourth proportional to 81,372.08, 122,262.60 and 51,803.12 is: 77,834.86
Step by Step Solution
- Step 1: Write the proportion equation
81,372.08 : 122,262.60 = 51,803.12 : x - Step 2: Convert to fraction form
81,372.08/122,262.60 = 51,803.12/x - Step 3: Cross multiply
81,372.08x = 122,262.60 × 51,803.12 - Step 4: Simplify right side
81,372.08x = 6,333,584,139.31 - Step 5: Solve for x
x = 6,333,584,139.31/81,372.08 - Step 6: Final answer
x = 77,834.86
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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.