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Finding the Fourth Proportional to 73,987.56, 110,948.40 and 21,384.54

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Solution

The fourth proportional to 73,987.56, 110,948.40 and 21,384.54 is: 32,067.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,987.56 : 110,948.40 = 21,384.54 : x
  2. Step 2: Convert to fraction form
    73,987.56/110,948.40 = 21,384.54/x
  3. Step 3: Cross multiply
    73,987.56x = 110,948.40 × 21,384.54
  4. Step 4: Simplify right side
    73,987.56x = 2,372,580,497.74
  5. Step 5: Solve for x
    x = 2,372,580,497.74/73,987.56
  6. Step 6: Final answer
    x = 32,067.29

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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.