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Finding the Fourth Proportional to 78,269, 108,011.22 and 44,735.72

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Solution

The fourth proportional to 78,269, 108,011.22 and 44,735.72 is: 61,735.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,269 : 108,011.22 = 44,735.72 : x
  2. Step 2: Convert to fraction form
    78,269/108,011.22 = 44,735.72/x
  3. Step 3: Cross multiply
    78,269x = 108,011.22 × 44,735.72
  4. Step 4: Simplify right side
    78,269x = 4,831,959,694.78
  5. Step 5: Solve for x
    x = 4,831,959,694.78/78,269
  6. Step 6: Final answer
    x = 61,735.29

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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.