Finding the Fourth Proportional to 73,122.75, 100,909.44 and 39,588.75
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Solution
The fourth proportional to 73,122.75, 100,909.44 and 39,588.75 is: 54,632.50
Step by Step Solution
- Step 1: Write the proportion equation
73,122.75 : 100,909.44 = 39,588.75 : x - Step 2: Convert to fraction form
73,122.75/100,909.44 = 39,588.75/x - Step 3: Cross multiply
73,122.75x = 100,909.44 × 39,588.75 - Step 4: Simplify right side
73,122.75x = 3,994,878,592.80 - Step 5: Solve for x
x = 3,994,878,592.80/73,122.75 - Step 6: Final answer
x = 54,632.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.