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Finding the Fourth Proportional to 66,099.78, 99,150.48 and 19,353.60

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Solution

The fourth proportional to 66,099.78, 99,150.48 and 19,353.60 is: 29,030.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,099.78 : 99,150.48 = 19,353.60 : x
  2. Step 2: Convert to fraction form
    66,099.78/99,150.48 = 19,353.60/x
  3. Step 3: Cross multiply
    66,099.78x = 99,150.48 × 19,353.60
  4. Step 4: Simplify right side
    66,099.78x = 1,918,918,729.73
  5. Step 5: Solve for x
    x = 1,918,918,729.73/66,099.78
  6. Step 6: Final answer
    x = 29,030.64

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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.