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Finding the Fourth Proportional to 70,768.10, 106,149.42 and 26,394.78

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Solution

The fourth proportional to 70,768.10, 106,149.42 and 26,394.78 is: 39,591.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,768.10 : 106,149.42 = 26,394.78 : x
  2. Step 2: Convert to fraction form
    70,768.10/106,149.42 = 26,394.78/x
  3. Step 3: Cross multiply
    70,768.10x = 106,149.42 × 26,394.78
  4. Step 4: Simplify right side
    70,768.10x = 2,801,790,986.09
  5. Step 5: Solve for x
    x = 2,801,790,986.09/70,768.10
  6. Step 6: Final answer
    x = 39,591.16

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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.