Finding the Fourth Proportional to 91,199.19, 125,856.99 and 57,209.10
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Solution
The fourth proportional to 91,199.19, 125,856.99 and 57,209.10 is: 78,949.88
Step by Step Solution
- Step 1: Write the proportion equation
91,199.19 : 125,856.99 = 57,209.10 : x - Step 2: Convert to fraction form
91,199.19/125,856.99 = 57,209.10/x - Step 3: Cross multiply
91,199.19x = 125,856.99 × 57,209.10 - Step 4: Simplify right side
91,199.19x = 7,200,165,126.61 - Step 5: Solve for x
x = 7,200,165,126.61/91,199.19 - Step 6: Final answer
x = 78,949.88
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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.