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Finding the Fourth Proportional to 84,964.80, 127,301.40 and 55,367.40

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Solution

The fourth proportional to 84,964.80, 127,301.40 and 55,367.40 is: 82,956.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,964.80 : 127,301.40 = 55,367.40 : x
  2. Step 2: Convert to fraction form
    84,964.80/127,301.40 = 55,367.40/x
  3. Step 3: Cross multiply
    84,964.80x = 127,301.40 × 55,367.40
  4. Step 4: Simplify right side
    84,964.80x = 7,048,347,534.36
  5. Step 5: Solve for x
    x = 7,048,347,534.36/84,964.80
  6. Step 6: Final answer
    x = 82,956.09

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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.