Finding the Fourth Proportional to 71,203.86, 106,804.76 and 21,282.84
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Solution
The fourth proportional to 71,203.86, 106,804.76 and 21,282.84 is: 31,923.95
Step by Step Solution
- Step 1: Write the proportion equation
71,203.86 : 106,804.76 = 21,282.84 : x - Step 2: Convert to fraction form
71,203.86/106,804.76 = 21,282.84/x - Step 3: Cross multiply
71,203.86x = 106,804.76 × 21,282.84 - Step 4: Simplify right side
71,203.86x = 2,273,108,511.90 - Step 5: Solve for x
x = 2,273,108,511.90/71,203.86 - Step 6: Final answer
x = 31,923.95
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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.