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Finding the Fourth Proportional to 66,100.64, 99,149.68 and 19,352.48

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Solution

The fourth proportional to 66,100.64, 99,149.68 and 19,352.48 is: 29,028.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,100.64 : 99,149.68 = 19,352.48 : x
  2. Step 2: Convert to fraction form
    66,100.64/99,149.68 = 19,352.48/x
  3. Step 3: Cross multiply
    66,100.64x = 99,149.68 × 19,352.48
  4. Step 4: Simplify right side
    66,100.64x = 1,918,792,199.21
  5. Step 5: Solve for x
    x = 1,918,792,199.21/66,100.64
  6. Step 6: Final answer
    x = 29,028.35

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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.