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Finding the Fourth Proportional to 73,404.15, 110,110.41 and 20,809.50

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Solution

The fourth proportional to 73,404.15, 110,110.41 and 20,809.50 is: 31,215.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,404.15 : 110,110.41 = 20,809.50 : x
  2. Step 2: Convert to fraction form
    73,404.15/110,110.41 = 20,809.50/x
  3. Step 3: Cross multiply
    73,404.15x = 110,110.41 × 20,809.50
  4. Step 4: Simplify right side
    73,404.15x = 2,291,342,576.90
  5. Step 5: Solve for x
    x = 2,291,342,576.90/73,404.15
  6. Step 6: Final answer
    x = 31,215.44

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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.