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Finding the Fourth Proportional to 40,781.68, 61,152.72 and 23,919.28

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Solution

The fourth proportional to 40,781.68, 61,152.72 and 23,919.28 is: 35,867.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,781.68 : 61,152.72 = 23,919.28 : x
  2. Step 2: Convert to fraction form
    40,781.68/61,152.72 = 23,919.28/x
  3. Step 3: Cross multiply
    40,781.68x = 61,152.72 × 23,919.28
  4. Step 4: Simplify right side
    40,781.68x = 1,462,729,032.44
  5. Step 5: Solve for x
    x = 1,462,729,032.44/40,781.68
  6. Step 6: Final answer
    x = 35,867.31

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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.