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Finding the Fourth Proportional to 79,843.20, 110,115.90 and 48,006.15

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Solution

The fourth proportional to 79,843.20, 110,115.90 and 48,006.15 is: 66,207.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,843.20 : 110,115.90 = 48,006.15 : x
  2. Step 2: Convert to fraction form
    79,843.20/110,115.90 = 48,006.15/x
  3. Step 3: Cross multiply
    79,843.20x = 110,115.90 × 48,006.15
  4. Step 4: Simplify right side
    79,843.20x = 5,286,240,412.79
  5. Step 5: Solve for x
    x = 5,286,240,412.79/79,843.20
  6. Step 6: Final answer
    x = 66,207.77

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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.