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Finding the Fourth Proportional to 73,216.34, 109,782.90 and 28,819.03

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Solution

The fourth proportional to 73,216.34, 109,782.90 and 28,819.03 is: 43,212.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,216.34 : 109,782.90 = 28,819.03 : x
  2. Step 2: Convert to fraction form
    73,216.34/109,782.90 = 28,819.03/x
  3. Step 3: Cross multiply
    73,216.34x = 109,782.90 × 28,819.03
  4. Step 4: Simplify right side
    73,216.34x = 3,163,836,688.59
  5. Step 5: Solve for x
    x = 3,163,836,688.59/73,216.34
  6. Step 6: Final answer
    x = 43,212.17

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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.