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Finding the Fourth Proportional to 83,178.80, 124,768.20 and 33,266.60

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Solution

The fourth proportional to 83,178.80, 124,768.20 and 33,266.60 is: 49,899.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,178.80 : 124,768.20 = 33,266.60 : x
  2. Step 2: Convert to fraction form
    83,178.80/124,768.20 = 33,266.60/x
  3. Step 3: Cross multiply
    83,178.80x = 124,768.20 × 33,266.60
  4. Step 4: Simplify right side
    83,178.80x = 4,150,613,802.12
  5. Step 5: Solve for x
    x = 4,150,613,802.12/83,178.80
  6. Step 6: Final answer
    x = 49,899.90

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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.