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Finding the Fourth Proportional to 42,406.64, 63,639.11 and 14,704.64

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Solution

The fourth proportional to 42,406.64, 63,639.11 and 14,704.64 is: 22,067.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,406.64 : 63,639.11 = 14,704.64 : x
  2. Step 2: Convert to fraction form
    42,406.64/63,639.11 = 14,704.64/x
  3. Step 3: Cross multiply
    42,406.64x = 63,639.11 × 14,704.64
  4. Step 4: Simplify right side
    42,406.64x = 935,789,884.27
  5. Step 5: Solve for x
    x = 935,789,884.27/42,406.64
  6. Step 6: Final answer
    x = 22,067.06

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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.