Finding the Fourth Proportional to 82,877.80, 124,316.70 and 36,221.80
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Solution
The fourth proportional to 82,877.80, 124,316.70 and 36,221.80 is: 54,332.70
Step by Step Solution
- Step 1: Write the proportion equation
82,877.80 : 124,316.70 = 36,221.80 : x - Step 2: Convert to fraction form
82,877.80/124,316.70 = 36,221.80/x - Step 3: Cross multiply
82,877.80x = 124,316.70 × 36,221.80 - Step 4: Simplify right side
82,877.80x = 4,502,974,644.06 - Step 5: Solve for x
x = 4,502,974,644.06/82,877.80 - Step 6: Final answer
x = 54,332.70
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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.