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Finding the Fourth Proportional to 101,104.60, 139,523.96 and 55,785.41

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Solution

The fourth proportional to 101,104.60, 139,523.96 and 55,785.41 is: 76,983.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,104.60 : 139,523.96 = 55,785.41 : x
  2. Step 2: Convert to fraction form
    101,104.60/139,523.96 = 55,785.41/x
  3. Step 3: Cross multiply
    101,104.60x = 139,523.96 × 55,785.41
  4. Step 4: Simplify right side
    101,104.60x = 7,783,400,476.34
  5. Step 5: Solve for x
    x = 7,783,400,476.34/101,104.60
  6. Step 6: Final answer
    x = 76,983.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.