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Finding the Fourth Proportional to 66,455.20, 99,661.20 and 22,074.40

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Solution

The fourth proportional to 66,455.20, 99,661.20 and 22,074.40 is: 33,104.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,455.20 : 99,661.20 = 22,074.40 : x
  2. Step 2: Convert to fraction form
    66,455.20/99,661.20 = 22,074.40/x
  3. Step 3: Cross multiply
    66,455.20x = 99,661.20 × 22,074.40
  4. Step 4: Simplify right side
    66,455.20x = 2,199,961,193.28
  5. Step 5: Solve for x
    x = 2,199,961,193.28/66,455.20
  6. Step 6: Final answer
    x = 33,104.43

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1.5x scale

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.