Finding the Fourth Proportional to 70,876.97, 106,315.91 and 18,286.91
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Solution
The fourth proportional to 70,876.97, 106,315.91 and 18,286.91 is: 27,430.48
Step by Step Solution
- Step 1: Write the proportion equation
70,876.97 : 106,315.91 = 18,286.91 : x - Step 2: Convert to fraction form
70,876.97/106,315.91 = 18,286.91/x - Step 3: Cross multiply
70,876.97x = 106,315.91 × 18,286.91 - Step 4: Simplify right side
70,876.97x = 1,944,189,321.98 - Step 5: Solve for x
x = 1,944,189,321.98/70,876.97 - Step 6: Final answer
x = 27,430.48
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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.