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Finding the Fourth Proportional to 101,521.73, 140,101.65 and 55,580.60

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Solution

The fourth proportional to 101,521.73, 140,101.65 and 55,580.60 is: 76,702.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,521.73 : 140,101.65 = 55,580.60 : x
  2. Step 2: Convert to fraction form
    101,521.73/140,101.65 = 55,580.60/x
  3. Step 3: Cross multiply
    101,521.73x = 140,101.65 × 55,580.60
  4. Step 4: Simplify right side
    101,521.73x = 7,786,934,198.77
  5. Step 5: Solve for x
    x = 7,786,934,198.77/101,521.73
  6. Step 6: Final answer
    x = 76,702.14

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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.