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Finding the Fourth Proportional to 55,200.30, 82,759.95 and 21,903.90

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Solution

The fourth proportional to 55,200.30, 82,759.95 and 21,903.90 is: 32,839.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,200.30 : 82,759.95 = 21,903.90 : x
  2. Step 2: Convert to fraction form
    55,200.30/82,759.95 = 21,903.90/x
  3. Step 3: Cross multiply
    55,200.30x = 82,759.95 × 21,903.90
  4. Step 4: Simplify right side
    55,200.30x = 1,812,765,668.81
  5. Step 5: Solve for x
    x = 1,812,765,668.81/55,200.30
  6. Step 6: Final answer
    x = 32,839.78

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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.