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Finding the Fourth Proportional to 40,206.80, 55,480.80 and 22,297.28

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Solution

The fourth proportional to 40,206.80, 55,480.80 and 22,297.28 is: 30,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,206.80 : 55,480.80 = 22,297.28 : x
  2. Step 2: Convert to fraction form
    40,206.80/55,480.80 = 22,297.28/x
  3. Step 3: Cross multiply
    40,206.80x = 55,480.80 × 22,297.28
  4. Step 4: Simplify right side
    40,206.80x = 1,237,070,932.22
  5. Step 5: Solve for x
    x = 1,237,070,932.22/40,206.80
  6. Step 6: Final answer
    x = 30,767.70

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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.