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Finding the Fourth Proportional to 101,009.30, 139,392.24 and 55,687.11

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Solution

The fourth proportional to 101,009.30, 139,392.24 and 55,687.11 is: 76,847.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,009.30 : 139,392.24 = 55,687.11 : x
  2. Step 2: Convert to fraction form
    101,009.30/139,392.24 = 55,687.11/x
  3. Step 3: Cross multiply
    101,009.30x = 139,392.24 × 55,687.11
  4. Step 4: Simplify right side
    101,009.30x = 7,762,351,002.03
  5. Step 5: Solve for x
    x = 7,762,351,002.03/101,009.30
  6. Step 6: Final answer
    x = 76,847.89

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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.