Finding the Fourth Proportional to 75,221.53, 112,972.84 and 66,218.84
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Solution
The fourth proportional to 75,221.53, 112,972.84 and 66,218.84 is: 99,451.98
Step by Step Solution
- Step 1: Write the proportion equation
75,221.53 : 112,972.84 = 66,218.84 : x - Step 2: Convert to fraction form
75,221.53/112,972.84 = 66,218.84/x - Step 3: Cross multiply
75,221.53x = 112,972.84 × 66,218.84 - Step 4: Simplify right side
75,221.53x = 7,480,930,109.54 - Step 5: Solve for x
x = 7,480,930,109.54/75,221.53 - Step 6: Final answer
x = 99,451.98
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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.