Finding the Fourth Proportional to 75,231.40, 112,847.10 and 47,237.80
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Solution
The fourth proportional to 75,231.40, 112,847.10 and 47,237.80 is: 70,856.70
Step by Step Solution
- Step 1: Write the proportion equation
75,231.40 : 112,847.10 = 47,237.80 : x - Step 2: Convert to fraction form
75,231.40/112,847.10 = 47,237.80/x - Step 3: Cross multiply
75,231.40x = 112,847.10 × 47,237.80 - Step 4: Simplify right side
75,231.40x = 5,330,648,740.38 - Step 5: Solve for x
x = 5,330,648,740.38/75,231.40 - Step 6: Final answer
x = 70,856.70
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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.