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Finding the Fourth Proportional to 43,987.52, 65,968.38 and 12,395.48

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Solution

The fourth proportional to 43,987.52, 65,968.38 and 12,395.48 is: 18,589.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,987.52 : 65,968.38 = 12,395.48 : x
  2. Step 2: Convert to fraction form
    43,987.52/65,968.38 = 12,395.48/x
  3. Step 3: Cross multiply
    43,987.52x = 65,968.38 × 12,395.48
  4. Step 4: Simplify right side
    43,987.52x = 817,709,734.92
  5. Step 5: Solve for x
    x = 817,709,734.92/43,987.52
  6. Step 6: Final answer
    x = 18,589.58

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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.