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Finding the Fourth Proportional to 71,876.22, 107,308.95 and 54,920.49

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Solution

The fourth proportional to 71,876.22, 107,308.95 and 54,920.49 is: 81,994.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,876.22 : 107,308.95 = 54,920.49 : x
  2. Step 2: Convert to fraction form
    71,876.22/107,308.95 = 54,920.49/x
  3. Step 3: Cross multiply
    71,876.22x = 107,308.95 × 54,920.49
  4. Step 4: Simplify right side
    71,876.22x = 5,893,460,115.39
  5. Step 5: Solve for x
    x = 5,893,460,115.39/71,876.22
  6. Step 6: Final answer
    x = 81,994.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.