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Finding the Fourth Proportional to 101,009.67, 139,390.77 and 55,686.60

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Solution

The fourth proportional to 101,009.67, 139,390.77 and 55,686.60 is: 76,846.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,009.67 : 139,390.77 = 55,686.60 : x
  2. Step 2: Convert to fraction form
    101,009.67/139,390.77 = 55,686.60/x
  3. Step 3: Cross multiply
    101,009.67x = 139,390.77 × 55,686.60
  4. Step 4: Simplify right side
    101,009.67x = 7,762,198,052.68
  5. Step 5: Solve for x
    x = 7,762,198,052.68/101,009.67
  6. Step 6: Final answer
    x = 76,846.09

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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.