Finding the Fourth Proportional to 81,271.68, 121,907.52 and 34,491.75
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Solution
The fourth proportional to 81,271.68, 121,907.52 and 34,491.75 is: 51,737.63
Step by Step Solution
- Step 1: Write the proportion equation
81,271.68 : 121,907.52 = 34,491.75 : x - Step 2: Convert to fraction form
81,271.68/121,907.52 = 34,491.75/x - Step 3: Cross multiply
81,271.68x = 121,907.52 × 34,491.75 - Step 4: Simplify right side
81,271.68x = 4,204,803,702.96 - Step 5: Solve for x
x = 4,204,803,702.96/81,271.68 - Step 6: Final answer
x = 51,737.63
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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.