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Finding the Fourth Proportional to 78,847.70, 108,805.83 and 43,037.42

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Solution

The fourth proportional to 78,847.70, 108,805.83 and 43,037.42 is: 59,389.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,847.70 : 108,805.83 = 43,037.42 : x
  2. Step 2: Convert to fraction form
    78,847.70/108,805.83 = 43,037.42/x
  3. Step 3: Cross multiply
    78,847.70x = 108,805.83 × 43,037.42
  4. Step 4: Simplify right side
    78,847.70x = 4,682,722,204.16
  5. Step 5: Solve for x
    x = 4,682,722,204.16/78,847.70
  6. Step 6: Final answer
    x = 59,389.46

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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.