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Finding the Fourth Proportional to 70,282.79, 96,992.55 and 40,067.57

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Solution

The fourth proportional to 70,282.79, 96,992.55 and 40,067.57 is: 55,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,282.79 : 96,992.55 = 40,067.57 : x
  2. Step 2: Convert to fraction form
    70,282.79/96,992.55 = 40,067.57/x
  3. Step 3: Cross multiply
    70,282.79x = 96,992.55 × 40,067.57
  4. Step 4: Simplify right side
    70,282.79x = 3,886,255,786.60
  5. Step 5: Solve for x
    x = 3,886,255,786.60/70,282.79
  6. Step 6: Final answer
    x = 55,294.56

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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.