Home / 73,139.13-109,712.97-20,552.72

Finding the Fourth Proportional to 73,139.13, 109,712.97 and 20,552.72

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Solution

The fourth proportional to 73,139.13, 109,712.97 and 20,552.72 is: 30,830.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,139.13 : 109,712.97 = 20,552.72 : x
  2. Step 2: Convert to fraction form
    73,139.13/109,712.97 = 20,552.72/x
  3. Step 3: Cross multiply
    73,139.13x = 109,712.97 × 20,552.72
  4. Step 4: Simplify right side
    73,139.13x = 2,254,899,404.21
  5. Step 5: Solve for x
    x = 2,254,899,404.21/73,139.13
  6. Step 6: Final answer
    x = 30,830.27

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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.