Finding the Fourth Proportional to 81,267.68, 121,901.52 and 34,487.75
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Solution
The fourth proportional to 81,267.68, 121,901.52 and 34,487.75 is: 51,731.63
Step by Step Solution
- Step 1: Write the proportion equation
81,267.68 : 121,901.52 = 34,487.75 : x - Step 2: Convert to fraction form
81,267.68/121,901.52 = 34,487.75/x - Step 3: Cross multiply
81,267.68x = 121,901.52 × 34,487.75 - Step 4: Simplify right side
81,267.68x = 4,204,109,146.38 - Step 5: Solve for x
x = 4,204,109,146.38/81,267.68 - Step 6: Final answer
x = 51,731.63
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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.