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Finding the Fourth Proportional to 70,149.31, 96,797.64 and 39,934.69

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Solution

The fourth proportional to 70,149.31, 96,797.64 and 39,934.69 is: 55,105.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,149.31 : 96,797.64 = 39,934.69 : x
  2. Step 2: Convert to fraction form
    70,149.31/96,797.64 = 39,934.69/x
  3. Step 3: Cross multiply
    70,149.31x = 96,797.64 × 39,934.69
  4. Step 4: Simplify right side
    70,149.31x = 3,865,583,746.13
  5. Step 5: Solve for x
    x = 3,865,583,746.13/70,149.31
  6. Step 6: Final answer
    x = 55,105.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.