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Finding the Fourth Proportional to 63,149.30, 94,739.09 and 21,029.75

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Solution

The fourth proportional to 63,149.30, 94,739.09 and 21,029.75 is: 31,549.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,149.30 : 94,739.09 = 21,029.75 : x
  2. Step 2: Convert to fraction form
    63,149.30/94,739.09 = 21,029.75/x
  3. Step 3: Cross multiply
    63,149.30x = 94,739.09 × 21,029.75
  4. Step 4: Simplify right side
    63,149.30x = 1,992,339,554.52
  5. Step 5: Solve for x
    x = 1,992,339,554.52/63,149.30
  6. Step 6: Final answer
    x = 31,549.67

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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.