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Finding the Fourth Proportional to 70,163.72, 105,262.02 and 47,987.54

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Solution

The fourth proportional to 70,163.72, 105,262.02 and 47,987.54 is: 71,992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,163.72 : 105,262.02 = 47,987.54 : x
  2. Step 2: Convert to fraction form
    70,163.72/105,262.02 = 47,987.54/x
  3. Step 3: Cross multiply
    70,163.72x = 105,262.02 × 47,987.54
  4. Step 4: Simplify right side
    70,163.72x = 5,051,265,658.39
  5. Step 5: Solve for x
    x = 5,051,265,658.39/70,163.72
  6. Step 6: Final answer
    x = 71,992.56

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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.