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Finding the Fourth Proportional to 78,959.83, 118,419.22 and 22,787.41

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Solution

The fourth proportional to 78,959.83, 118,419.22 and 22,787.41 is: 34,175.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,959.83 : 118,419.22 = 22,787.41 : x
  2. Step 2: Convert to fraction form
    78,959.83/118,419.22 = 22,787.41/x
  3. Step 3: Cross multiply
    78,959.83x = 118,419.22 × 22,787.41
  4. Step 4: Simplify right side
    78,959.83x = 2,698,467,318.02
  5. Step 5: Solve for x
    x = 2,698,467,318.02/78,959.83
  6. Step 6: Final answer
    x = 34,175.19

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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.