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Finding the Fourth Proportional to 70,067.88, 96,695.82 and 39,857.56

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Solution

The fourth proportional to 70,067.88, 96,695.82 and 39,857.56 is: 55,004.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,067.88 : 96,695.82 = 39,857.56 : x
  2. Step 2: Convert to fraction form
    70,067.88/96,695.82 = 39,857.56/x
  3. Step 3: Cross multiply
    70,067.88x = 96,695.82 × 39,857.56
  4. Step 4: Simplify right side
    70,067.88x = 3,854,059,447.40
  5. Step 5: Solve for x
    x = 3,854,059,447.40/70,067.88
  6. Step 6: Final answer
    x = 55,004.65

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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.