Finding the Fourth Proportional to 67,812.76, 101,725.68 and 21,053.08
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Solution
The fourth proportional to 67,812.76, 101,725.68 and 21,053.08 is: 31,581.65
Step by Step Solution
- Step 1: Write the proportion equation
67,812.76 : 101,725.68 = 21,053.08 : x - Step 2: Convert to fraction form
67,812.76/101,725.68 = 21,053.08/x - Step 3: Cross multiply
67,812.76x = 101,725.68 × 21,053.08 - Step 4: Simplify right side
67,812.76x = 2,141,638,879.09 - Step 5: Solve for x
x = 2,141,638,879.09/67,812.76 - Step 6: Final answer
x = 31,581.65
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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.