Finding the Fourth Proportional to 75,029.40, 112,544.10 and 68,905.80
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Solution
The fourth proportional to 75,029.40, 112,544.10 and 68,905.80 is: 103,358.70
Step by Step Solution
- Step 1: Write the proportion equation
75,029.40 : 112,544.10 = 68,905.80 : x - Step 2: Convert to fraction form
75,029.40/112,544.10 = 68,905.80/x - Step 3: Cross multiply
75,029.40x = 112,544.10 × 68,905.80 - Step 4: Simplify right side
75,029.40x = 7,754,941,245.78 - Step 5: Solve for x
x = 7,754,941,245.78/75,029.40 - Step 6: Final answer
x = 103,358.70
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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.