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Finding the Fourth Proportional to 73,800, 110,700.63 and 21,209.46

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Solution

The fourth proportional to 73,800, 110,700.63 and 21,209.46 is: 31,814.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,800 : 110,700.63 = 21,209.46 : x
  2. Step 2: Convert to fraction form
    73,800/110,700.63 = 21,209.46/x
  3. Step 3: Cross multiply
    73,800x = 110,700.63 × 21,209.46
  4. Step 4: Simplify right side
    73,800x = 2,347,900,583.96
  5. Step 5: Solve for x
    x = 2,347,900,583.96/73,800
  6. Step 6: Final answer
    x = 31,814.37

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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.