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Finding the Fourth Proportional to 66,497.74, 99,763.02 and 19,750.56

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Solution

The fourth proportional to 66,497.74, 99,763.02 and 19,750.56 is: 29,630.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,497.74 : 99,763.02 = 19,750.56 : x
  2. Step 2: Convert to fraction form
    66,497.74/99,763.02 = 19,750.56/x
  3. Step 3: Cross multiply
    66,497.74x = 99,763.02 × 19,750.56
  4. Step 4: Simplify right side
    66,497.74x = 1,970,375,512.29
  5. Step 5: Solve for x
    x = 1,970,375,512.29/66,497.74
  6. Step 6: Final answer
    x = 29,630.71

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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.