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Finding the Fourth Proportional to 82,704.90, 123,984.45 and 49,389.60

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Solution

The fourth proportional to 82,704.90, 123,984.45 and 49,389.60 is: 74,040.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,704.90 : 123,984.45 = 49,389.60 : x
  2. Step 2: Convert to fraction form
    82,704.90/123,984.45 = 49,389.60/x
  3. Step 3: Cross multiply
    82,704.90x = 123,984.45 × 49,389.60
  4. Step 4: Simplify right side
    82,704.90x = 6,123,542,391.72
  5. Step 5: Solve for x
    x = 6,123,542,391.72/82,704.90
  6. Step 6: Final answer
    x = 74,040.87

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1.5x scale

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.