Finding the Fourth Proportional to 87,983.64, 121,423.86 and 50,257.08
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Solution
The fourth proportional to 87,983.64, 121,423.86 and 50,257.08 is: 69,358.45
Step by Step Solution
- Step 1: Write the proportion equation
87,983.64 : 121,423.86 = 50,257.08 : x - Step 2: Convert to fraction form
87,983.64/121,423.86 = 50,257.08/x - Step 3: Cross multiply
87,983.64x = 121,423.86 × 50,257.08 - Step 4: Simplify right side
87,983.64x = 6,102,408,645.93 - Step 5: Solve for x
x = 6,102,408,645.93/87,983.64 - Step 6: Final answer
x = 69,358.45
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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.