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Finding the Fourth Proportional to 82,009.40, 122,936.70 and 44,514.20

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Solution

The fourth proportional to 82,009.40, 122,936.70 and 44,514.20 is: 66,729.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,009.40 : 122,936.70 = 44,514.20 : x
  2. Step 2: Convert to fraction form
    82,009.40/122,936.70 = 44,514.20/x
  3. Step 3: Cross multiply
    82,009.40x = 122,936.70 × 44,514.20
  4. Step 4: Simplify right side
    82,009.40x = 5,472,428,851.14
  5. Step 5: Solve for x
    x = 5,472,428,851.14/82,009.40
  6. Step 6: Final answer
    x = 66,729.29

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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.