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Finding the Fourth Proportional to 81,924.80, 122,656.80 and 73,630.40

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Solution

The fourth proportional to 81,924.80, 122,656.80 and 73,630.40 is: 110,238.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,924.80 : 122,656.80 = 73,630.40 : x
  2. Step 2: Convert to fraction form
    81,924.80/122,656.80 = 73,630.40/x
  3. Step 3: Cross multiply
    81,924.80x = 122,656.80 × 73,630.40
  4. Step 4: Simplify right side
    81,924.80x = 9,031,269,246.72
  5. Step 5: Solve for x
    x = 9,031,269,246.72/81,924.80
  6. Step 6: Final answer
    x = 110,238.53

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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.