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Finding the Fourth Proportional to 74,220.84, 111,369.54 and 34,781.96

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Solution

The fourth proportional to 74,220.84, 111,369.54 and 34,781.96 is: 52,190.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,220.84 : 111,369.54 = 34,781.96 : x
  2. Step 2: Convert to fraction form
    74,220.84/111,369.54 = 34,781.96/x
  3. Step 3: Cross multiply
    74,220.84x = 111,369.54 × 34,781.96
  4. Step 4: Simplify right side
    74,220.84x = 3,873,650,885.50
  5. Step 5: Solve for x
    x = 3,873,650,885.50/74,220.84
  6. Step 6: Final answer
    x = 52,190.88

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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.