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Finding the Fourth Proportional to 81,626.81, 122,464.82 and 29,029.46

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Solution

The fourth proportional to 81,626.81, 122,464.82 and 29,029.46 is: 43,552.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,626.81 : 122,464.82 = 29,029.46 : x
  2. Step 2: Convert to fraction form
    81,626.81/122,464.82 = 29,029.46/x
  3. Step 3: Cross multiply
    81,626.81x = 122,464.82 × 29,029.46
  4. Step 4: Simplify right side
    81,626.81x = 3,555,087,593.60
  5. Step 5: Solve for x
    x = 3,555,087,593.60/81,626.81
  6. Step 6: Final answer
    x = 43,552.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.