Finding the Fourth Proportional to 87,837.32, 121,215.53 and 47,551.08
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Solution
The fourth proportional to 87,837.32, 121,215.53 and 47,551.08 is: 65,620.50
Step by Step Solution
- Step 1: Write the proportion equation
87,837.32 : 121,215.53 = 47,551.08 : x - Step 2: Convert to fraction form
87,837.32/121,215.53 = 47,551.08/x - Step 3: Cross multiply
87,837.32x = 121,215.53 × 47,551.08 - Step 4: Simplify right side
87,837.32x = 5,763,928,758.19 - Step 5: Solve for x
x = 5,763,928,758.19/87,837.32 - Step 6: Final answer
x = 65,620.50
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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.