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Finding the Fourth Proportional to 66,245.64, 99,138.82 and 63,490.02

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Solution

The fourth proportional to 66,245.64, 99,138.82 and 63,490.02 is: 95,014.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245.64 : 99,138.82 = 63,490.02 : x
  2. Step 2: Convert to fraction form
    66,245.64/99,138.82 = 63,490.02/x
  3. Step 3: Cross multiply
    66,245.64x = 99,138.82 × 63,490.02
  4. Step 4: Simplify right side
    66,245.64x = 6,294,325,253.12
  5. Step 5: Solve for x
    x = 6,294,325,253.12/66,245.64
  6. Step 6: Final answer
    x = 95,014.94

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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.