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Finding the Fourth Proportional to 79,429.72, 119,147.44 and 39,965.36

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Solution

The fourth proportional to 79,429.72, 119,147.44 and 39,965.36 is: 59,949.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,429.72 : 119,147.44 = 39,965.36 : x
  2. Step 2: Convert to fraction form
    79,429.72/119,147.44 = 39,965.36/x
  3. Step 3: Cross multiply
    79,429.72x = 119,147.44 × 39,965.36
  4. Step 4: Simplify right side
    79,429.72x = 4,761,770,332.68
  5. Step 5: Solve for x
    x = 4,761,770,332.68/79,429.72
  6. Step 6: Final answer
    x = 59,949.48

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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.