Finding the Fourth Proportional to 97,739.28, 134,868.84 and 54,721.20
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Solution
The fourth proportional to 97,739.28, 134,868.84 and 54,721.20 is: 75,508.89
Step by Step Solution
- Step 1: Write the proportion equation
97,739.28 : 134,868.84 = 54,721.20 : x - Step 2: Convert to fraction form
97,739.28/134,868.84 = 54,721.20/x - Step 3: Cross multiply
97,739.28x = 134,868.84 × 54,721.20 - Step 4: Simplify right side
97,739.28x = 7,380,184,767.41 - Step 5: Solve for x
x = 7,380,184,767.41/97,739.28 - Step 6: Final answer
x = 75,508.89
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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.