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Finding the Fourth Proportional to 101,004.30, 139,379.66 and 55,679.94

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Solution

The fourth proportional to 101,004.30, 139,379.66 and 55,679.94 is: 76,834.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,004.30 : 139,379.66 = 55,679.94 : x
  2. Step 2: Convert to fraction form
    101,004.30/139,379.66 = 55,679.94/x
  3. Step 3: Cross multiply
    101,004.30x = 139,379.66 × 55,679.94
  4. Step 4: Simplify right side
    101,004.30x = 7,760,651,106.02
  5. Step 5: Solve for x
    x = 7,760,651,106.02/101,004.30
  6. Step 6: Final answer
    x = 76,834.86

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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.