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Finding the Fourth Proportional to 79,347.53, 119,020.75 and 20,182.68

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Solution

The fourth proportional to 79,347.53, 119,020.75 and 20,182.68 is: 30,273.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,347.53 : 119,020.75 = 20,182.68 : x
  2. Step 2: Convert to fraction form
    79,347.53/119,020.75 = 20,182.68/x
  3. Step 3: Cross multiply
    79,347.53x = 119,020.75 × 20,182.68
  4. Step 4: Simplify right side
    79,347.53x = 2,402,157,660.15
  5. Step 5: Solve for x
    x = 2,402,157,660.15/79,347.53
  6. Step 6: Final answer
    x = 30,273.88

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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.