Home / 81,428.54-122,138.48-26,024.54

Finding the Fourth Proportional to 81,428.54, 122,138.48 and 26,024.54

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Solution

The fourth proportional to 81,428.54, 122,138.48 and 26,024.54 is: 39,035.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428.54 : 122,138.48 = 26,024.54 : x
  2. Step 2: Convert to fraction form
    81,428.54/122,138.48 = 26,024.54/x
  3. Step 3: Cross multiply
    81,428.54x = 122,138.48 × 26,024.54
  4. Step 4: Simplify right side
    81,428.54x = 3,178,597,758.30
  5. Step 5: Solve for x
    x = 3,178,597,758.30/81,428.54
  6. Step 6: Final answer
    x = 39,035.43

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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.