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Finding the Fourth Proportional to 70,886.90, 106,451.69 and 47,345.73

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Solution

The fourth proportional to 70,886.90, 106,451.69 and 47,345.73 is: 71,099.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,886.90 : 106,451.69 = 47,345.73 : x
  2. Step 2: Convert to fraction form
    70,886.90/106,451.69 = 47,345.73/x
  3. Step 3: Cross multiply
    70,886.90x = 106,451.69 × 47,345.73
  4. Step 4: Simplify right side
    70,886.90x = 5,040,032,736.06
  5. Step 5: Solve for x
    x = 5,040,032,736.06/70,886.90
  6. Step 6: Final answer
    x = 71,099.64

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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.