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Finding the Fourth Proportional to 101,425.54, 139,963.14 and 55,484.44

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Solution

The fourth proportional to 101,425.54, 139,963.14 and 55,484.44 is: 76,566.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,425.54 : 139,963.14 = 55,484.44 : x
  2. Step 2: Convert to fraction form
    101,425.54/139,963.14 = 55,484.44/x
  3. Step 3: Cross multiply
    101,425.54x = 139,963.14 × 55,484.44
  4. Step 4: Simplify right side
    101,425.54x = 7,765,776,443.54
  5. Step 5: Solve for x
    x = 7,765,776,443.54/101,425.54
  6. Step 6: Final answer
    x = 76,566.28

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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.