Finding the Fourth Proportional to 81,703.84, 112,794.30 and 54,986.80
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Solution
The fourth proportional to 81,703.84, 112,794.30 and 54,986.80 is: 75,910.72
Step by Step Solution
- Step 1: Write the proportion equation
81,703.84 : 112,794.30 = 54,986.80 : x - Step 2: Convert to fraction form
81,703.84/112,794.30 = 54,986.80/x - Step 3: Cross multiply
81,703.84x = 112,794.30 × 54,986.80 - Step 4: Simplify right side
81,703.84x = 6,202,197,615.24 - Step 5: Solve for x
x = 6,202,197,615.24/81,703.84 - Step 6: Final answer
x = 75,910.72
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.