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Finding the Fourth Proportional to 80,011.12, 110,410.78 and 47,782.09

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Solution

The fourth proportional to 80,011.12, 110,410.78 and 47,782.09 is: 65,936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,011.12 : 110,410.78 = 47,782.09 : x
  2. Step 2: Convert to fraction form
    80,011.12/110,410.78 = 47,782.09/x
  3. Step 3: Cross multiply
    80,011.12x = 110,410.78 × 47,782.09
  4. Step 4: Simplify right side
    80,011.12x = 5,275,657,826.93
  5. Step 5: Solve for x
    x = 5,275,657,826.93/80,011.12
  6. Step 6: Final answer
    x = 65,936.56

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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.