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Finding the Fourth Proportional to 81,048.60, 111,847.21 and 45,238.61

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Solution

The fourth proportional to 81,048.60, 111,847.21 and 45,238.61 is: 62,429.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,048.60 : 111,847.21 = 45,238.61 : x
  2. Step 2: Convert to fraction form
    81,048.60/111,847.21 = 45,238.61/x
  3. Step 3: Cross multiply
    81,048.60x = 111,847.21 × 45,238.61
  4. Step 4: Simplify right side
    81,048.60x = 5,059,812,479.30
  5. Step 5: Solve for x
    x = 5,059,812,479.30/81,048.60
  6. Step 6: Final answer
    x = 62,429.36

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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.