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Finding the Fourth Proportional to 80,415.78, 110,979.30 and 44,609.10

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Solution

The fourth proportional to 80,415.78, 110,979.30 and 44,609.10 is: 61,563.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,415.78 : 110,979.30 = 44,609.10 : x
  2. Step 2: Convert to fraction form
    80,415.78/110,979.30 = 44,609.10/x
  3. Step 3: Cross multiply
    80,415.78x = 110,979.30 × 44,609.10
  4. Step 4: Simplify right side
    80,415.78x = 4,950,686,691.63
  5. Step 5: Solve for x
    x = 4,950,686,691.63/80,415.78
  6. Step 6: Final answer
    x = 61,563.62

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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.