Home / 81,432.96-122,129.78-34,022.43

Finding the Fourth Proportional to 81,432.96, 122,129.78 and 34,022.43

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Solution

The fourth proportional to 81,432.96, 122,129.78 and 34,022.43 is: 51,025.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,432.96 : 122,129.78 = 34,022.43 : x
  2. Step 2: Convert to fraction form
    81,432.96/122,129.78 = 34,022.43/x
  3. Step 3: Cross multiply
    81,432.96x = 122,129.78 × 34,022.43
  4. Step 4: Simplify right side
    81,432.96x = 4,155,151,720.85
  5. Step 5: Solve for x
    x = 4,155,151,720.85/81,432.96
  6. Step 6: Final answer
    x = 51,025.43

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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.