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Finding the Fourth Proportional to 71,324.75, 106,987.01 and 21,404.76

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Solution

The fourth proportional to 71,324.75, 106,987.01 and 21,404.76 is: 32,107.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,324.75 : 106,987.01 = 21,404.76 : x
  2. Step 2: Convert to fraction form
    71,324.75/106,987.01 = 21,404.76/x
  3. Step 3: Cross multiply
    71,324.75x = 106,987.01 × 21,404.76
  4. Step 4: Simplify right side
    71,324.75x = 2,290,031,165.14
  5. Step 5: Solve for x
    x = 2,290,031,165.14/71,324.75
  6. Step 6: Final answer
    x = 32,107.11

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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.