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Finding the Fourth Proportional to 66,495.73, 99,760.02 and 19,748.56

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Solution

The fourth proportional to 66,495.73, 99,760.02 and 19,748.56 is: 29,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,495.73 : 99,760.02 = 19,748.56 : x
  2. Step 2: Convert to fraction form
    66,495.73/99,760.02 = 19,748.56/x
  3. Step 3: Cross multiply
    66,495.73x = 99,760.02 × 19,748.56
  4. Step 4: Simplify right side
    66,495.73x = 1,970,116,740.57
  5. Step 5: Solve for x
    x = 1,970,116,740.57/66,495.73
  6. Step 6: Final answer
    x = 29,627.72

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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.