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Finding the Fourth Proportional to 74,667.77, 111,983.97 and 21,358.11

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Solution

The fourth proportional to 74,667.77, 111,983.97 and 21,358.11 is: 32,032.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,667.77 : 111,983.97 = 21,358.11 : x
  2. Step 2: Convert to fraction form
    74,667.77/111,983.97 = 21,358.11/x
  3. Step 3: Cross multiply
    74,667.77x = 111,983.97 × 21,358.11
  4. Step 4: Simplify right side
    74,667.77x = 2,391,765,384.53
  5. Step 5: Solve for x
    x = 2,391,765,384.53/74,667.77
  6. Step 6: Final answer
    x = 32,032.10

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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.