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Finding the Fourth Proportional to 82,791.10, 124,101.60 and 40,606.30

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Solution

The fourth proportional to 82,791.10, 124,101.60 and 40,606.30 is: 60,867.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,791.10 : 124,101.60 = 40,606.30 : x
  2. Step 2: Convert to fraction form
    82,791.10/124,101.60 = 40,606.30/x
  3. Step 3: Cross multiply
    82,791.10x = 124,101.60 × 40,606.30
  4. Step 4: Simplify right side
    82,791.10x = 5,039,306,800.08
  5. Step 5: Solve for x
    x = 5,039,306,800.08/82,791.10
  6. Step 6: Final answer
    x = 60,867.74

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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.