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Finding the Fourth Proportional to 81,462.90, 122,230.80 and 37,066.80

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Solution

The fourth proportional to 81,462.90, 122,230.80 and 37,066.80 is: 55,616.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,462.90 : 122,230.80 = 37,066.80 : x
  2. Step 2: Convert to fraction form
    81,462.90/122,230.80 = 37,066.80/x
  3. Step 3: Cross multiply
    81,462.90x = 122,230.80 × 37,066.80
  4. Step 4: Simplify right side
    81,462.90x = 4,530,704,617.44
  5. Step 5: Solve for x
    x = 4,530,704,617.44/81,462.90
  6. Step 6: Final answer
    x = 55,616.79

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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.