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Finding the Fourth Proportional to 71,325.78, 106,982.47 and 43,237.56

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Solution

The fourth proportional to 71,325.78, 106,982.47 and 43,237.56 is: 64,852.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,325.78 : 106,982.47 = 43,237.56 : x
  2. Step 2: Convert to fraction form
    71,325.78/106,982.47 = 43,237.56/x
  3. Step 3: Cross multiply
    71,325.78x = 106,982.47 × 43,237.56
  4. Step 4: Simplify right side
    71,325.78x = 4,625,660,965.57
  5. Step 5: Solve for x
    x = 4,625,660,965.57/71,325.78
  6. Step 6: Final answer
    x = 64,852.58

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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.