Home / 40,172.38-55,438.28-22,267.68

Finding the Fourth Proportional to 40,172.38, 55,438.28 and 22,267.68

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Solution

The fourth proportional to 40,172.38, 55,438.28 and 22,267.68 is: 30,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,172.38 : 55,438.28 = 22,267.68 : x
  2. Step 2: Convert to fraction form
    40,172.38/55,438.28 = 22,267.68/x
  3. Step 3: Cross multiply
    40,172.38x = 55,438.28 × 22,267.68
  4. Step 4: Simplify right side
    40,172.38x = 1,234,481,878.79
  5. Step 5: Solve for x
    x = 1,234,481,878.79/40,172.38
  6. Step 6: Final answer
    x = 30,729.62

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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.