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Finding the Fourth Proportional to 73,162.56, 109,750.28 and 20,572.48

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Solution

The fourth proportional to 73,162.56, 109,750.28 and 20,572.48 is: 30,860.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,162.56 : 109,750.28 = 20,572.48 : x
  2. Step 2: Convert to fraction form
    73,162.56/109,750.28 = 20,572.48/x
  3. Step 3: Cross multiply
    73,162.56x = 109,750.28 × 20,572.48
  4. Step 4: Simplify right side
    73,162.56x = 2,257,835,440.29
  5. Step 5: Solve for x
    x = 2,257,835,440.29/73,162.56
  6. Step 6: Final answer
    x = 30,860.53

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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.