Finding the Fourth Proportional to 78,883.80, 118,325.70 and 74,995.80
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Solution
The fourth proportional to 78,883.80, 118,325.70 and 74,995.80 is: 112,493.70
Step by Step Solution
- Step 1: Write the proportion equation
78,883.80 : 118,325.70 = 74,995.80 : x - Step 2: Convert to fraction form
78,883.80/118,325.70 = 74,995.80/x - Step 3: Cross multiply
78,883.80x = 118,325.70 × 74,995.80 - Step 4: Simplify right side
78,883.80x = 8,873,930,532.06 - Step 5: Solve for x
x = 8,873,930,532.06/78,883.80 - Step 6: Final answer
x = 112,493.70
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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.