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Finding the Fourth Proportional to 61,195.60, 91,809.60 and 21,748.60

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Solution

The fourth proportional to 61,195.60, 91,809.60 and 21,748.60 is: 32,628.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,195.60 : 91,809.60 = 21,748.60 : x
  2. Step 2: Convert to fraction form
    61,195.60/91,809.60 = 21,748.60/x
  3. Step 3: Cross multiply
    61,195.60x = 91,809.60 × 21,748.60
  4. Step 4: Simplify right side
    61,195.60x = 1,996,730,266.56
  5. Step 5: Solve for x
    x = 1,996,730,266.56/61,195.60
  6. Step 6: Final answer
    x = 32,628.66

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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.