Finding the Fourth Proportional to 87,209.76, 120,345.84 and 49,486.08
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Solution
The fourth proportional to 87,209.76, 120,345.84 and 49,486.08 is: 68,288.73
Step by Step Solution
- Step 1: Write the proportion equation
87,209.76 : 120,345.84 = 49,486.08 : x - Step 2: Convert to fraction form
87,209.76/120,345.84 = 49,486.08/x - Step 3: Cross multiply
87,209.76x = 120,345.84 × 49,486.08 - Step 4: Simplify right side
87,209.76x = 5,955,443,865.91 - Step 5: Solve for x
x = 5,955,443,865.91/87,209.76 - Step 6: Final answer
x = 68,288.73
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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.