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Finding the Fourth Proportional to 71,325.65, 107,006.25 and 21,406.67

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Solution

The fourth proportional to 71,325.65, 107,006.25 and 21,406.67 is: 32,115.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,325.65 : 107,006.25 = 21,406.67 : x
  2. Step 2: Convert to fraction form
    71,325.65/107,006.25 = 21,406.67/x
  3. Step 3: Cross multiply
    71,325.65x = 107,006.25 × 21,406.67
  4. Step 4: Simplify right side
    71,325.65x = 2,290,647,481.69
  5. Step 5: Solve for x
    x = 2,290,647,481.69/71,325.65
  6. Step 6: Final answer
    x = 32,115.34

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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.