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Finding the Fourth Proportional to 113,771.60, 170,645.56 and 30,660.56

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Solution

The fourth proportional to 113,771.60, 170,645.56 and 30,660.56 is: 45,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,771.60 : 170,645.56 = 30,660.56 : x
  2. Step 2: Convert to fraction form
    113,771.60/170,645.56 = 30,660.56/x
  3. Step 3: Cross multiply
    113,771.60x = 170,645.56 × 30,660.56
  4. Step 4: Simplify right side
    113,771.60x = 5,232,088,431.11
  5. Step 5: Solve for x
    x = 5,232,088,431.11/113,771.60
  6. Step 6: Final answer
    x = 45,987.65

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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.