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Finding the Fourth Proportional to 68,440.33, 102,660.50 and 21,693.21

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Solution

The fourth proportional to 68,440.33, 102,660.50 and 21,693.21 is: 32,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,440.33 : 102,660.50 = 21,693.21 : x
  2. Step 2: Convert to fraction form
    68,440.33/102,660.50 = 21,693.21/x
  3. Step 3: Cross multiply
    68,440.33x = 102,660.50 × 21,693.21
  4. Step 4: Simplify right side
    68,440.33x = 2,227,035,785.21
  5. Step 5: Solve for x
    x = 2,227,035,785.21/68,440.33
  6. Step 6: Final answer
    x = 32,539.82

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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.