Finding the Fourth Proportional to 82,316.13, 123,474.47 and 19,986.63
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Solution
The fourth proportional to 82,316.13, 123,474.47 and 19,986.63 is: 29,980.01
Step by Step Solution
- Step 1: Write the proportion equation
82,316.13 : 123,474.47 = 19,986.63 : x - Step 2: Convert to fraction form
82,316.13/123,474.47 = 19,986.63/x - Step 3: Cross multiply
82,316.13x = 123,474.47 × 19,986.63 - Step 4: Simplify right side
82,316.13x = 2,467,838,446.40 - Step 5: Solve for x
x = 2,467,838,446.40/82,316.13 - Step 6: Final answer
x = 29,980.01
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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.