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Finding the Fourth Proportional to 82,011.40, 122,939.70 and 44,516.20

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Solution

The fourth proportional to 82,011.40, 122,939.70 and 44,516.20 is: 66,732.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,011.40 : 122,939.70 = 44,516.20 : x
  2. Step 2: Convert to fraction form
    82,011.40/122,939.70 = 44,516.20/x
  3. Step 3: Cross multiply
    82,011.40x = 122,939.70 × 44,516.20
  4. Step 4: Simplify right side
    82,011.40x = 5,472,808,273.14
  5. Step 5: Solve for x
    x = 5,472,808,273.14/82,011.40
  6. Step 6: Final answer
    x = 66,732.29

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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.