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Finding the Fourth Proportional to 74,788.70, 112,204.31 and 30,447.27

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Solution

The fourth proportional to 74,788.70, 112,204.31 and 30,447.27 is: 45,679.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,788.70 : 112,204.31 = 30,447.27 : x
  2. Step 2: Convert to fraction form
    74,788.70/112,204.31 = 30,447.27/x
  3. Step 3: Cross multiply
    74,788.70x = 112,204.31 × 30,447.27
  4. Step 4: Simplify right side
    74,788.70x = 3,416,314,769.50
  5. Step 5: Solve for x
    x = 3,416,314,769.50/74,788.70
  6. Step 6: Final answer
    x = 45,679.56

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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.