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Finding the Fourth Proportional to 66,478.44, 99,577.02 and 53,773.64

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Solution

The fourth proportional to 66,478.44, 99,577.02 and 53,773.64 is: 80,546.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,478.44 : 99,577.02 = 53,773.64 : x
  2. Step 2: Convert to fraction form
    66,478.44/99,577.02 = 53,773.64/x
  3. Step 3: Cross multiply
    66,478.44x = 99,577.02 × 53,773.64
  4. Step 4: Simplify right side
    66,478.44x = 5,354,618,825.75
  5. Step 5: Solve for x
    x = 5,354,618,825.75/66,478.44
  6. Step 6: Final answer
    x = 80,546.70

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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.