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Finding the Fourth Proportional to 70,986.03, 106,479.09 and 39,843.15

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Solution

The fourth proportional to 70,986.03, 106,479.09 and 39,843.15 is: 59,764.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,986.03 : 106,479.09 = 39,843.15 : x
  2. Step 2: Convert to fraction form
    70,986.03/106,479.09 = 39,843.15/x
  3. Step 3: Cross multiply
    70,986.03x = 106,479.09 × 39,843.15
  4. Step 4: Simplify right side
    70,986.03x = 4,242,462,354.73
  5. Step 5: Solve for x
    x = 4,242,462,354.73/70,986.03
  6. Step 6: Final answer
    x = 59,764.75

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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.