Finding the Fourth Proportional to 71,315.73, 106,973.60 and 18,725.13
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Solution
The fourth proportional to 71,315.73, 106,973.60 and 18,725.13 is: 28,087.70
Step by Step Solution
- Step 1: Write the proportion equation
71,315.73 : 106,973.60 = 18,725.13 : x - Step 2: Convert to fraction form
71,315.73/106,973.60 = 18,725.13/x - Step 3: Cross multiply
71,315.73x = 106,973.60 × 18,725.13 - Step 4: Simplify right side
71,315.73x = 2,003,094,472.94 - Step 5: Solve for x
x = 2,003,094,472.94/71,315.73 - Step 6: Final answer
x = 28,087.70
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1.5x scale
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.