Finding the Fourth Proportional to 87,862.29, 121,249.41 and 47,575.20
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Solution
The fourth proportional to 87,862.29, 121,249.41 and 47,575.20 is: 65,653.48
Step by Step Solution
- Step 1: Write the proportion equation
87,862.29 : 121,249.41 = 47,575.20 : x - Step 2: Convert to fraction form
87,862.29/121,249.41 = 47,575.20/x - Step 3: Cross multiply
87,862.29x = 121,249.41 × 47,575.20 - Step 4: Simplify right side
87,862.29x = 5,768,464,930.63 - Step 5: Solve for x
x = 5,768,464,930.63/87,862.29 - Step 6: Final answer
x = 65,653.48
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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.