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Finding the Fourth Proportional to 71,106.56, 106,661.12 and 39,874.56

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Solution

The fourth proportional to 71,106.56, 106,661.12 and 39,874.56 is: 59,812.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,106.56 : 106,661.12 = 39,874.56 : x
  2. Step 2: Convert to fraction form
    71,106.56/106,661.12 = 39,874.56/x
  3. Step 3: Cross multiply
    71,106.56x = 106,661.12 × 39,874.56
  4. Step 4: Simplify right side
    71,106.56x = 4,253,065,229.11
  5. Step 5: Solve for x
    x = 4,253,065,229.11/71,106.56
  6. Step 6: Final answer
    x = 59,812.56

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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.