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Finding the Fourth Proportional to 63,339.91, 94,978 and 21,205.33

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Solution

The fourth proportional to 63,339.91, 94,978 and 21,205.33 is: 31,797.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,339.91 : 94,978 = 21,205.33 : x
  2. Step 2: Convert to fraction form
    63,339.91/94,978 = 21,205.33/x
  3. Step 3: Cross multiply
    63,339.91x = 94,978 × 21,205.33
  4. Step 4: Simplify right side
    63,339.91x = 2,014,039,832.74
  5. Step 5: Solve for x
    x = 2,014,039,832.74/63,339.91
  6. Step 6: Final answer
    x = 31,797.33

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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.