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Finding the Fourth Proportional to 78,993.84, 108,996.41 and 45,001.58

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Solution

The fourth proportional to 78,993.84, 108,996.41 and 45,001.58 is: 62,093.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,993.84 : 108,996.41 = 45,001.58 : x
  2. Step 2: Convert to fraction form
    78,993.84/108,996.41 = 45,001.58/x
  3. Step 3: Cross multiply
    78,993.84x = 108,996.41 × 45,001.58
  4. Step 4: Simplify right side
    78,993.84x = 4,905,010,664.33
  5. Step 5: Solve for x
    x = 4,905,010,664.33/78,993.84
  6. Step 6: Final answer
    x = 62,093.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.