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Finding the Fourth Proportional to 73,429.61, 110,142.48 and 20,839.10

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Solution

The fourth proportional to 73,429.61, 110,142.48 and 20,839.10 is: 31,258.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,429.61 : 110,142.48 = 20,839.10 : x
  2. Step 2: Convert to fraction form
    73,429.61/110,142.48 = 20,839.10/x
  3. Step 3: Cross multiply
    73,429.61x = 110,142.48 × 20,839.10
  4. Step 4: Simplify right side
    73,429.61x = 2,295,270,154.97
  5. Step 5: Solve for x
    x = 2,295,270,154.97/73,429.61
  6. Step 6: Final answer
    x = 31,258.10

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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.