Finding the Fourth Proportional to 80,002.10, 110,320.20 and 68,708.99
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Solution
The fourth proportional to 80,002.10, 110,320.20 and 68,708.99 is: 94,747.38
Step by Step Solution
- Step 1: Write the proportion equation
80,002.10 : 110,320.20 = 68,708.99 : x - Step 2: Convert to fraction form
80,002.10/110,320.20 = 68,708.99/x - Step 3: Cross multiply
80,002.10x = 110,320.20 × 68,708.99 - Step 4: Simplify right side
80,002.10x = 7,579,988,967.00 - Step 5: Solve for x
x = 7,579,988,967.00/80,002.10 - Step 6: Final answer
x = 94,747.38
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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.