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Finding the Fourth Proportional to 81,480.81, 122,275.45 and 33,488.78

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Solution

The fourth proportional to 81,480.81, 122,275.45 and 33,488.78 is: 50,255.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,480.81 : 122,275.45 = 33,488.78 : x
  2. Step 2: Convert to fraction form
    81,480.81/122,275.45 = 33,488.78/x
  3. Step 3: Cross multiply
    81,480.81x = 122,275.45 × 33,488.78
  4. Step 4: Simplify right side
    81,480.81x = 4,094,855,644.45
  5. Step 5: Solve for x
    x = 4,094,855,644.45/81,480.81
  6. Step 6: Final answer
    x = 50,255.46

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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.