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Finding the Fourth Proportional to 101,424.54, 139,961.76 and 55,483.44

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Solution

The fourth proportional to 101,424.54, 139,961.76 and 55,483.44 is: 76,564.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,424.54 : 139,961.76 = 55,483.44 : x
  2. Step 2: Convert to fraction form
    101,424.54/139,961.76 = 55,483.44/x
  3. Step 3: Cross multiply
    101,424.54x = 139,961.76 × 55,483.44
  4. Step 4: Simplify right side
    101,424.54x = 7,765,559,913.25
  5. Step 5: Solve for x
    x = 7,765,559,913.25/101,424.54
  6. Step 6: Final answer
    x = 76,564.90

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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.