Finding the Fourth Proportional to 87,819.99, 131,730.30 and 21,259.99
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Solution
The fourth proportional to 87,819.99, 131,730.30 and 21,259.99 is: 31,890.06
Step by Step Solution
- Step 1: Write the proportion equation
87,819.99 : 131,730.30 = 21,259.99 : x - Step 2: Convert to fraction form
87,819.99/131,730.30 = 21,259.99/x - Step 3: Cross multiply
87,819.99x = 131,730.30 × 21,259.99 - Step 4: Simplify right side
87,819.99x = 2,800,584,860.70 - Step 5: Solve for x
x = 2,800,584,860.70/87,819.99 - Step 6: Final answer
x = 31,890.06
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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.