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Finding the Fourth Proportional to 78,958.83, 118,417.73 and 22,786.41

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Solution

The fourth proportional to 78,958.83, 118,417.73 and 22,786.41 is: 34,173.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,958.83 : 118,417.73 = 22,786.41 : x
  2. Step 2: Convert to fraction form
    78,958.83/118,417.73 = 22,786.41/x
  3. Step 3: Cross multiply
    78,958.83x = 118,417.73 × 22,786.41
  4. Step 4: Simplify right side
    78,958.83x = 2,698,314,833.12
  5. Step 5: Solve for x
    x = 2,698,314,833.12/78,958.83
  6. Step 6: Final answer
    x = 34,173.69

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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.