Home / 40,078.20-55,305.64-22,172.14

Finding the Fourth Proportional to 40,078.20, 55,305.64 and 22,172.14

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Solution

The fourth proportional to 40,078.20, 55,305.64 and 22,172.14 is: 30,596.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,078.20 : 55,305.64 = 22,172.14 : x
  2. Step 2: Convert to fraction form
    40,078.20/55,305.64 = 22,172.14/x
  3. Step 3: Cross multiply
    40,078.20x = 55,305.64 × 22,172.14
  4. Step 4: Simplify right side
    40,078.20x = 1,226,244,392.87
  5. Step 5: Solve for x
    x = 1,226,244,392.87/40,078.20
  6. Step 6: Final answer
    x = 30,596.29

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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.