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Finding the Fourth Proportional to 71,009.63, 97,993.61 and 39,179.47

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Solution

The fourth proportional to 71,009.63, 97,993.61 and 39,179.47 is: 54,067.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,009.63 : 97,993.61 = 39,179.47 : x
  2. Step 2: Convert to fraction form
    71,009.63/97,993.61 = 39,179.47/x
  3. Step 3: Cross multiply
    71,009.63x = 97,993.61 × 39,179.47
  4. Step 4: Simplify right side
    71,009.63x = 3,839,337,556.15
  5. Step 5: Solve for x
    x = 3,839,337,556.15/71,009.63
  6. Step 6: Final answer
    x = 54,067.84

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1.5x scale

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.