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Finding the Fourth Proportional to 101,873.28, 140,592 and 56,556.48

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Solution

The fourth proportional to 101,873.28, 140,592 and 56,556.48 is: 78,051.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,873.28 : 140,592 = 56,556.48 : x
  2. Step 2: Convert to fraction form
    101,873.28/140,592 = 56,556.48/x
  3. Step 3: Cross multiply
    101,873.28x = 140,592 × 56,556.48
  4. Step 4: Simplify right side
    101,873.28x = 7,951,388,636.16
  5. Step 5: Solve for x
    x = 7,951,388,636.16/101,873.28
  6. Step 6: Final answer
    x = 78,051.76

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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.