Home / 81,934.79-122,902.58-28,626.54

Finding the Fourth Proportional to 81,934.79, 122,902.58 and 28,626.54

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Solution

The fourth proportional to 81,934.79, 122,902.58 and 28,626.54 is: 42,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,934.79 : 122,902.58 = 28,626.54 : x
  2. Step 2: Convert to fraction form
    81,934.79/122,902.58 = 28,626.54/x
  3. Step 3: Cross multiply
    81,934.79x = 122,902.58 × 28,626.54
  4. Step 4: Simplify right side
    81,934.79x = 3,518,275,622.47
  5. Step 5: Solve for x
    x = 3,518,275,622.47/81,934.79
  6. Step 6: Final answer
    x = 42,939.95

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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.