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Finding the Fourth Proportional to 81,022.90, 121,570.80 and 36,626.80

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Solution

The fourth proportional to 81,022.90, 121,570.80 and 36,626.80 is: 54,956.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,022.90 : 121,570.80 = 36,626.80 : x
  2. Step 2: Convert to fraction form
    81,022.90/121,570.80 = 36,626.80/x
  3. Step 3: Cross multiply
    81,022.90x = 121,570.80 × 36,626.80
  4. Step 4: Simplify right side
    81,022.90x = 4,452,749,377.44
  5. Step 5: Solve for x
    x = 4,452,749,377.44/81,022.90
  6. Step 6: Final answer
    x = 54,956.68

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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.