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Finding the Fourth Proportional to 61,201.13, 91,810.94 and 21,748.87

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Solution

The fourth proportional to 61,201.13, 91,810.94 and 21,748.87 is: 32,626.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,201.13 : 91,810.94 = 21,748.87 : x
  2. Step 2: Convert to fraction form
    61,201.13/91,810.94 = 21,748.87/x
  3. Step 3: Cross multiply
    61,201.13x = 91,810.94 × 21,748.87
  4. Step 4: Simplify right side
    61,201.13x = 1,996,783,793.96
  5. Step 5: Solve for x
    x = 1,996,783,793.96/61,201.13
  6. Step 6: Final answer
    x = 32,626.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.