Finding the Fourth Proportional to 75,021.40, 112,532.10 and 47,027.80
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Solution
The fourth proportional to 75,021.40, 112,532.10 and 47,027.80 is: 70,541.70
Step by Step Solution
- Step 1: Write the proportion equation
75,021.40 : 112,532.10 = 47,027.80 : x - Step 2: Convert to fraction form
75,021.40/112,532.10 = 47,027.80/x - Step 3: Cross multiply
75,021.40x = 112,532.10 × 47,027.80 - Step 4: Simplify right side
75,021.40x = 5,292,137,092.38 - Step 5: Solve for x
x = 5,292,137,092.38/75,021.40 - Step 6: Final answer
x = 70,541.70
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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.