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Finding the Fourth Proportional to 76,220.60, 105,174.45 and 43,956.41

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Solution

The fourth proportional to 76,220.60, 105,174.45 and 43,956.41 is: 60,654.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,220.60 : 105,174.45 = 43,956.41 : x
  2. Step 2: Convert to fraction form
    76,220.60/105,174.45 = 43,956.41/x
  3. Step 3: Cross multiply
    76,220.60x = 105,174.45 × 43,956.41
  4. Step 4: Simplify right side
    76,220.60x = 4,623,090,719.85
  5. Step 5: Solve for x
    x = 4,623,090,719.85/76,220.60
  6. Step 6: Final answer
    x = 60,654.09

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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.