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Finding the Fourth Proportional to 84,954.20, 127,358.40 and 43,401.20

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Solution

The fourth proportional to 84,954.20, 127,358.40 and 43,401.20 is: 65,064.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,954.20 : 127,358.40 = 43,401.20 : x
  2. Step 2: Convert to fraction form
    84,954.20/127,358.40 = 43,401.20/x
  3. Step 3: Cross multiply
    84,954.20x = 127,358.40 × 43,401.20
  4. Step 4: Simplify right side
    84,954.20x = 5,527,507,390.08
  5. Step 5: Solve for x
    x = 5,527,507,390.08/84,954.20
  6. Step 6: Final answer
    x = 65,064.56

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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.