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Finding the Fourth Proportional to 66,016.20, 99,072.90 and 43,822.20

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Solution

The fourth proportional to 66,016.20, 99,072.90 and 43,822.20 is: 65,765.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,016.20 : 99,072.90 = 43,822.20 : x
  2. Step 2: Convert to fraction form
    66,016.20/99,072.90 = 43,822.20/x
  3. Step 3: Cross multiply
    66,016.20x = 99,072.90 × 43,822.20
  4. Step 4: Simplify right side
    66,016.20x = 4,341,592,438.38
  5. Step 5: Solve for x
    x = 4,341,592,438.38/66,016.20
  6. Step 6: Final answer
    x = 65,765.56

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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.